RF Cavity Design. Erk Jensen CERN BE/RF. CERN Accelerator School Accelerator Physics (Intermediate level) Darmstadt 2009
|
|
|
- Suzanna Roberts
- 5 years ago
- Views:
Transcription
1 RF Cavity Design Erk Jensen CERN BE/RF CERN Accelerator School Accelerator Physics (Intermediate level) Darmstadt 009 CAS Darmstadt '09 RF Cavity Design 1
2 Overview DC versus RF Basic equations: Lorentz & Maxwell, RF breakdown Some theory: from waveguide to pillbox rectangular waveguide, waveguide dispersion, standing waves waveguide resonators, round waveguides, Pillbox cavity Accelerating gap Induction cell, ferrite cavity, drift tube linac, transit time factor Characterizing a cavity resonance frequency, shunt impedance, beam loading, loss factor, RF to beam efficiency, transverse effects, Panofsky Wenzel, higher order modes, PS 80 MHz cavity (magnetic coupling) More examples of cavities PEP II, LEP cavities, PS 40 MHz cavity (electric coupling), RF Power sources Many gaps Why? Example: side coupled linac, LIBO Travelling wave structures Brillouin diagram, iris loaded structure, waveguide coupling Superconducting Accelerating Structures RFQ s CAS Darmstadt '09 RF Cavity Design
3 DC VERSUS RF CAS Darmstadt '09 RF Cavity Design 3
4 DC accelerator potential W q E d s q DC versus RF RF accelerator CAS Darmstadt '09 RF Cavity Design 4
5 Lorentz force A charged particle moving with velocity through an electromagnetic field experiences a force d d p t q E v B v p v m W mc The energy of the particle is pc mc W kin mc 1 Change of W due to the this force (work done) ; differentiate: WdW c pdp qc p dw qv Edt E v B dt qc p E dt Note: no work is done by the magnetic field. CAS Darmstadt '09 RF Cavity Design 5
6 Maxwell s equations (in vacuum) why not DC? 1) t 0 1 B c t E t E J 0 B 0 E B 0 c E 0 E DC ( ): which is solved by Limit: If you want to gain 1 MeV, you need a potential of 1 MV! 0 ) Circular machine: DC acceleration impossible since E ds 0 With time varying fields: E t B E ds B t da CAS Darmstadt '09 RF Cavity Design 6
7 Maxwell s equation in vacuum (contd.) CAS Darmstadt '09 RF Cavity Design E t c E E E E 0 1 E t c E vector identity: curl of 3 rd and of 1 st equation: t with 4 th equation : i.e. Laplace in 4 dimensions E B t E B E t c B
8 Another reason for RF: breakdown limit surface field, in vacuum,cu surface, room temperature Wang & Loew, SLAC-PUB-7684, 1997 Approximate limit for CLIC parameters (1 GHz, 140 ns, breakdown rate: 10-7 m -1 ): 60 MV/m Kilpatrick 1957, 4.67 f E c e 4.5 f in GHz, E c in MV/m E c CAS Darmstadt '09 RF Cavity Design 8
9 FROM WAVEGUIDE TO PILLBOX CAS Darmstadt '09 RF Cavity Design 9
10 Homogeneous plane wave E u B u k r y x cos t k r cos t k r cos z sin c x x Wave vector : the direction of is the direction of propagation, the length of k is the phase shift per unit length. behaves like a vector. k k k k c k c c E y φ z k z c c 1 CAS Darmstadt '09 RF Cavity Design 10
11 Wave length, phase velocity The components of are related to the wavelength in the direction of that component as etc., to the phase velocity as. CAS Darmstadt '09 RF Cavity Design 11 c k 1 c z c k c k c z z k k c k c c k z z z f k v, z x E y
12 Superposition of homogeneous plane waves E y x z + = Metallic walls may be inserted where without perturbing the fields. Note the standing wave in x direction! This way one gets a hollow rectangular waveguide E y 0 CAS Darmstadt '09 RF Cavity Design 1
13 Rectangular waveguide Fundamental (TE 10 or H 10 ) mode in a standard rectangular waveguide. E.g. forward wave -y power flow electric field power flow: 1 Re cross section E H * d A x z power flow magnetic field z x CAS Darmstadt '09 RF Cavity Design 13
14 Waveguide dispersion k z Im g e.g.: TE 10 wave in rectangular waveguide: slow wave free space, ω/c j c j Z0 a cutoff a general cylindrical waveguide: c fast wave j Z 0 k c j for TE, Z 0 for TM j In a hollow waveguide: phase velocity > c, group velocity < c CAS Darmstadt '09 RF Cavity Design 14
15 Waveguide dispersion (continued: Higher Order Modes) TE 0 TE 01 TE 10 free space, ω/c c TE 10 k z Im CAS Darmstadt '09 RF Cavity Design 15
16 General waveguide equations: Transverse wave equation (membrane equation): boundary condition: longitudinal wave equations (transmission line equations): TE (or H) modes T c T c 0 TM (or E) modes n T 0 T 0 du d z d I d z z z Z 0 0 I U Z z 0 z 0 propagation constant: characteristic impedance: ortho normal eigenvectors: transverse fields: longitudinal field: H z c c Z 0 u j e z T E H I TU z j c j 1 c U z zu z e e Z 0 j CAS Darmstadt '09 RF Cavity Design 16 E z e c c T z T I j
17 CAS Darmstadt '09 RF Cavity Design 17 TM (E) modes: TE (H) modes: y b n x a m na mb ab T n m H mn cos cos 1 ) ( y b n x a m na mb ab T E mn sin sin ) ( i for i for i m m a T mn m mn mn m m E mn cos sin J J 1 ) ( m m a m T mn m mn m mn m H mn sin cos J J ) ( TE (H) modes: TM (E) modes: where Ø = a a b b n a m c c a c c mn
18 Standing wave resonator Same as above, but two counter running waves of identical amplitude. electric field no net power flow: 1 Re cross section E H * d A 0 magnetic field (90 out of phase) CAS Darmstadt '09 RF Cavity Design 18
19 Round waveguide parameters used in calculation: f = 1.43, 1.09, 1.13 f c, a: radius E B TE 11 : fundamental mode TM 01 : axial electric field TE 01 : lowest losses! f c GHz a / mm f c GHz a / mm GHz a / mm CAS Darmstadt '09 RF Cavity Design 19 f c
20 Pillbox cavity TM 010 mode (only 1/8 shown) electric field magnetic field CAS Darmstadt '09 RF Cavity Design 0
21 Pillbox cavity field (w/o beam tube) CAS Darmstadt '09 RF Cavity Design 1 a a T J J 1, a a a B a a a a E z J J 1 J J 1 j 1 a c pillbox 01 0 a h a h Q R pillbox ) ( sin J h a a Q pillbox 1 01 The only non vanishing field components : h Ø a for later:
22 ACCELERATING GAP CAS Darmstadt '09 RF Cavity Design
23 Accelerating gap We want a voltage across the gap! It cannot be DC, since we want the beam tube on ground potential. Use Eds The shield imposes a db da dt upper limit of the voltage pulse duration or equivalently a lower limit to the usable frequency. gap voltage The limit can be extended with a material which acts as open circuit! Materials typically used: ferrites (depending on f-range) magnetic alloys (MA) like Metglas, Finemet, Vitrovac resonantly driven with RF (ferrite loaded cavities) or with pulses (induction cell) CAS Darmstadt '09 RF Cavity Design 3
24 Linear induction accelerator E ds B da t compare: transformer, secondary = beam Acc. voltage during B ramp. CAS Darmstadt '09 RF Cavity Design 4
25 Ferrite cavity PS Booster, MHz, < 10 kv gap NiZn ferrites CAS Darmstadt '09 RF Cavity Design 5
26 Gap of PS cavity (prototype) CAS Darmstadt '09 RF Cavity Design 6
27 Drift Tube Linac (DTL) how it works For slow particles! E.g. few MeV The drift tube lengths can easily be adapted. electric field CAS Darmstadt '09 RF Cavity Design 7
28 Drift tube linac practical implementations CAS Darmstadt '09 RF Cavity Design 8
29 Transit time factor If the gap is small, the voltage is small. E z dz If the gap large, the RF field varies notably while the particle passes. Define the accelerating voltage Transit time factor E z e E j z c z dz dz V gap E z e j z c dz Example pillbox: transit time factor vs. h sin 01 h h 01 a a h/ CAS Darmstadt '09 RF Cavity Design 9
30 CHARACTERIZING A CAVITY CAS Darmstadt '09 RF Cavity Design 30
31 Cavity resonator equivalent circuit Simplification: single mode I G V gap I B Generator P Beam R/β C L R L=R/(Q 0 ) β: coupling factor Cavity C=Q/(R 0 ) R: Shunt impedance L C : R upon Q CAS Darmstadt '09 RF Cavity Design 31
32 Resonance CAS Darmstadt '09 RF Cavity Design 3
33 Reentrant cavity Nose cones increase transit time factor, round outer shape minimizes losses. nose cone Example: KEK photon factory 500 MHz R probably as good as it gets this cavity optimized pillbox R/Q: 111 Ω Ω Q: R: 4.9 MΩ 4.47 MΩ CAS Darmstadt '09 RF Cavity Design 33
34 k loss R Q V 4 W 0 gap 1 C Loss factor V (induced) Impedance seen by the beam I B Beam Energy deposited by a single charge q: Voltage induced by a single charge q: V k gap loss q k loss q R/ C Cavity 0 e t f 0 L R CAS Darmstadt '09 RF Cavity Design 34 Q L L=R/(Q 0 ) C=Q/(R 0 ) t
35 Summary: relations V gap, W, P loss gap voltage k R Q loss V gap W 0 R 0 Q V gap 4 W R shunt V gap P loss Energy stored inside the cavity 0 Q W P loss Power lost in the cavity walls CAS Darmstadt '09 RF Cavity Design 35
36 Beam loading RF to beam efficiency The beam current loads the generator, in the equivalent circuit this appears as a resistance in parallel to the shunt impedance. If the generator is matched to the unloaded cavity, beam loading will cause the accelerating voltage to decrease. The power absorbed by the beam is gap the power loss P. V R For high efficiency, beam loading shall be high. B The RF to beam efficiency is. 1 Re CAS Darmstadt '09 RF Cavity Design V R gap I B V * gap I B I I G
37 Resonance frequency Transit time factor Characterizing cavities field varies while particle is traversing the gap Shunt impedance gap voltage power relation V R gap 0 E z e E j z c 1 L C Circuit definition z dz dz shunt P loss V Linac definition gap R shunt P loss Q factor 0 W QP loss R/Q independent of losses only geometry! R Q Vgap W 0 L C R Q V gap W 0 loss factor k loss R 0 Q V 4 W CAS Darmstadt '09 RF Cavity Design 37 gap k loss R 0 4 Q V gap 4 W
38 Example Pillbox: 0 R Q pillbox pillbox 01 c a a Q pillbox a h 01 4 J 1 sin ( h a h ) a Cu S/m CAS Darmstadt '09 RF Cavity Design 38
39 Higher order modes external dampers... R 1, Q 1, 1 R, Q, R 3, Q 3, 3... n 1 n n 3 I B CAS Darmstadt '09 RF Cavity Design 39
40 Higher order modes (measured spectrum) without dampers with dampers CAS Darmstadt '09 RF Cavity Design 40
41 Pillbox: Dipole mode (TM 110 ) (only 1/8 shown) electric field (@ 0º) magnetic field (@ 90º) CAS Darmstadt '09 RF Cavity Design 41
42 Panofsky Wenzel theorem For particles moving virtually at v=c, the integrated transverse force (kick) can be determined from the transverse variation of the integrated longitudinal force! j F F c Pure TE modes: No net transverse force! Transverse modes are characterized by the transverse impedance in -domain the transverse loss factor (kick factor) in t-domain! W.K.H. Panofsky, W.A. Wenzel: Some Considerations Concerning the Transverse Deflection of Charged Particles in Radio-Frequency Fields, RSI 7, 1957] CAS Darmstadt '09 RF Cavity Design 4
43 CERN/PS 80 MHz cavity (for LHC) inductive (loop) coupling, low self inductance CAS Darmstadt '09 RF Cavity Design 43
44 Higher order modes Example shown: 80 MHz cavity PS for LHC. Color coded: E CAS Darmstadt '09 RF Cavity Design 44
45 MORE EXAMPLES OF CAVITIES CAS Darmstadt '09 RF Cavity Design 45
46 PS 19 MHz cavity (prototype, photo: 1966) CAS Darmstadt '09 RF Cavity Design 46
47 Examples of cavities PEP II cavity 476 MHz, single cell, 1 MV gap with 150 kw, strong HOM damping, LEP normal conducting Cu RF cavities, 350 MHz. 5 cell standing wave + spherical cavity for energy storage, 3 MV CAS Darmstadt '09 RF Cavity Design 47
48 CERN/PS 40 MHz cavity (for LHC) example for capacitive coupling coupling C cavity CAS Darmstadt '09 RF Cavity Design 48
49 RF POWER SOURCES CAS Darmstadt '09 RF Cavity Design 49
50 RF Power sources > 00 MHz: Klystrons Thales TH1801, Multi Beam Klystron (MBK), 1.3 GHz, 117 kv. Achieved: 48 db gain, 10 MW peak, 150 kw average, η = 65 % db: output power input power < 1000 MHz: grid tubes pictures from electrondevices.com Tetrode IOT UHF Diacrode CAS Darmstadt '09 RF Cavity Design 50
51 RF power sources Typical ranges (commercially available) grid tubes 1000 klystrons CW/Average power [kw] solid state (x3) IOT CCTWTs 1 Transistors f [MHz] CAS Darmstadt '09 RF Cavity Design 51
52 Example of a tetrode amplifier (80 MHz, CERN/PS) 400 kw, with fast RF feedback 18 Ω coaxial output (towards cavity) kv DC anode voltage feed through with λ/4 stub tetrode cooling water feed throughs coaxial input matching circuit CAS Darmstadt '09 RF Cavity Design 5
53 MANY GAPS CAS Darmstadt '09 RF Cavity Design 53
54 What do you gain with many gaps? The R/Q of a single gap cavity is limited to some 100 W. Now consider to distribute the available power to n identical cavities: each will receive P/n, thus produce an accelerating voltage of R P n. The total accelerating voltage thus increased, equivalent to a total equivalent shunt impedance of nr. P/n P/n P/n P/n P V acc n R n nrp 1 3 n CAS Darmstadt '09 RF Cavity Design 54
55 Standing wave multicell cavity Instead of distributing the power from the amplifier, one might as well couple the cavities, such that the power automatically distributes, or have a cavity with many gaps (e.g. drift tube linac). Coupled cavity accelerating structure (side coupled) The phase relation between gaps is important! CAS Darmstadt '09 RF Cavity Design 55
56 Example of Side Coupled Structure A 3 GHz Side Coupled Structure to accelerate protons out of cyclotrons from 6 MeV to 00 MeV Medical application: treatment of tumours. Prototype of Module 1 built at CERN (000) Collaboration CERN/INFN/ Tera Foundation CAS Darmstadt '09 RF Cavity Design 56
57 LIBO prototype This Picture made it to the title page of CERN Courier vol. 41 No. 1 (Jan./Feb. 001) CAS Darmstadt '09 RF Cavity Design 57
58 TRAVELLING WAVE STRUCTURES CAS Darmstadt '09 RF Cavity Design 58
59 Brillouin diagram Travelling wave structure L/c speed of light line, /c synchronous L CAS Darmstadt '09 RF Cavity Design 59
60 Iris loaded waveguide 11.4 GHz structure (NLC) 1 cm 30 GHz structure CAS Darmstadt '09 RF Cavity Design 60
61 Disc loaded structure with strong HOM damping choke mode cavity Dimensions in mm CAS Darmstadt '09 RF Cavity Design 61
62 Power coupling with waveguides Input coupler shown: Re {Poynting vector} (power density) Output coupler Travelling wave structure (CTF3 drive beam, 3 GHz) ¼geometry shown CAS Darmstadt '09 RF Cavity Design 6
63 3 GHz Accelerating structure (CTF3) CAS Darmstadt '09 RF Cavity Design 63
64 Examples (CLIC 11.4, 1 and 30 GHz) T18 reached 105 MV/m! HDS novel fabrication technique CAS Darmstadt '09 RF Cavity Design 64
65 SUPERCONDUCTING ACCELERATING STRUCTURES CAS Darmstadt '09 RF Cavity Design 65
66 LEP Superconducting cavities 10. MV/ per cavity CAS Darmstadt '09 RF Cavity Design 66
67 LHC SC RF, 4 cavity module, 400 MHz CAS Darmstadt '09 RF Cavity Design 67
68 ILC high gradient SC structures at 1.3 GHz 5 35 MV/m CAS Darmstadt '09 RF Cavity Design 68
69 Small superconducting cavities (example RIA, Argonne) 115 MHz split ring cavity, 17.5 MHz β = 0.19 lollipop cavity 57.5 MHz cavities: β= 0.06 QWR (quarter wave resonator) β = 0.03 fork cavity 345 MHz β = 0.4 spoke cavity β = 0.01 fork cavity pictures from Shepard et al.: Superconducting accelerating structures for a multi beam driver linac for RIA, Linac 000, Monterey CAS Darmstadt '09 RF Cavity Design 69
70 RFQ S CAS Darmstadt '09 RF Cavity Design 70
71 Old pre injector 750 kv DC, CERN Linac before 1990 All this was replaced by the RFQ CAS Darmstadt '09 RF Cavity Design 71
72 RFQ of CERN Linac CAS Darmstadt '09 RF Cavity Design 7
73 The Radio Frequency Quadrupole (RFQ) Minimum Energy of a DTL: 500 kev (low duty) 5 MeV (high duty) At low energy / high current we need strong focalisation Magnetic focusing (proportional to β) is inefficient at low energy. Solution (Kapchinski, 70 s, first realised at LANL): Electric quadrupole focusing + bunching + acceleration CAS Darmstadt '09 RF Cavity Design 73
74 RFQ electrode modulation The electrode modulation creates a longitudinal field component that creates the bunches and accelerates the beam. CAS Darmstadt '09 RF Cavity Design 74
75 A look inside CERN AD s RFQ D CAS Darmstadt '09 RF Cavity Design 75
Normal-conducting high-gradient rf systems
Normal-conducting high-gradient rf systems Introduction Motivation for high gradient Order of 100 GeV/km Operational and state-of-the-art SwissFEL C-band linac: Just under 30 MV/m CLIC prototypes: Over
High acceleration gradient. Critical applications: Linear colliders e.g. ILC X-ray FELs e.g. DESY XFEL
High acceleration gradient Critical applications: Linear colliders e.g. ILC X-ray FELs e.g. DESY XFEL Critical points The physical limitation of a SC resonator is given by the requirement that the RF magnetic
RF Design of Normal Conducting Deflecting Cavity
RF Design of Normal Conducting Deflecting Cavity Valery Dolgashev (SLAC), Geoff Waldschmidt, Ali Nassiri (Argonne National Laboratory, Advanced Photon Source) 48th ICFA Advanced Beam Dynamics Workshop
Maurizio Vretenar Linac4 Project Leader EuCARD-2 Coordinator
Maurizio Vretenar Linac4 Project Leader EuCARD-2 Coordinator Every accelerator needs a linac as injector to pass the region where the velocity of the particles increases with energy. At high energies (relativity)
FAST RF KICKER DESIGN
FAST RF KICKER DESIGN David Alesini LNF-INFN, Frascati, Rome, Italy ICFA Mini-Workshop on Deflecting/Crabbing Cavity Applications in Accelerators, Shanghai, April 23-25, 2008 FAST STRIPLINE INJECTION KICKERS
Low-beta Structures. Maurizio Vretenar CERN BE/RF CAS RF Ebeltoft 2010
Low-beta Structures Maurizio Vretenar CERN BE/RF CAS RF Ebeltoft. Low-beta: problems and solutions. Coupled-cell accelerating structures 3. Overview and comparison of low-beta structures 4. The Radio Frequency
Design of ESS-Bilbao RFQ Linear Accelerator
Design of ESS-Bilbao RFQ Linear Accelerator J.L. Muñoz 1*, D. de Cos 1, I. Madariaga 1 and I. Bustinduy 1 1 ESS-Bilbao *Corresponding author: Ugaldeguren III, Polígono A - 7 B, 48170 Zamudio SPAIN, jlmunoz@essbilbao.org
REVIEW OF FAST BEAM CHOPPING F. Caspers CERN AB-RF-FB
F. Caspers CERN AB-RF-FB Introduction Review of several fast chopping systems ESS-RAL LANL-SNS JAERI CERN-SPL Discussion Conclusion 1 Introduction Beam choppers are typically used for β = v/c values between
REVIEW OF HIGH POWER CW COUPLERS FOR SC CAVITIES. S. Belomestnykh
REVIEW OF HIGH POWER CW COUPLERS FOR SC CAVITIES S. Belomestnykh HPC workshop JLAB, 30 October 2002 Introduction Many aspects of the high-power coupler design, fabrication, preparation, conditioning, integration
04th - 16th August, th International Nathiagali Summer College 1 CAVITY BASICS. C. Serpico
39th International Nathiagali Summer College 1 CAVITY BASICS C. Serpico 39th International Nathiagali Summer College 2 Outline Maxwell equations Guided propagation Rectangular waveguide Circular waveguide
JUAS 2018 LINACS. Jean-Baptiste Lallement, Veliko Dimov BE/ABP CERN.
LINACS Jean-Baptiste Lallement, Veliko Dimov BE/ABP CERN jean-baptiste.lallement@cern.ch http://jlalleme.web.cern.ch/jlalleme/juas2018/ Credits Much material is taken from: Thomas Wangler, RF linear accelerators
R.K.YADAV. 2. Explain with suitable sketch the operation of two-cavity Klystron amplifier. explain the concept of velocity and current modulations.
Question Bank DEPARTMENT OF ELECTRONICS AND COMMUNICATION SUBJECT- MICROWAVE ENGINEERING(EEC-603) Unit-III 1. What are the high frequency limitations of conventional tubes? Explain clearly. 2. Explain
RF Systems I. Erk Jensen, CERN BE-RF
RF Systems I Erk Jensen, CERN BE-RF Introduction to Accelerator Physics, Prague, Czech Republic, 31 Aug 12 Sept 2014 Definitions & basic concepts db t-domain vs. ω-domain phasors 8th Sept, 2014 CAS Prague
RF LINACS. Alessandra Lombardi BE/ ABP CERN
1 RF LINACS Alessandra Lombardi BE/ ABP CERN 2 Credits much of the material is taken directly from Thomas Wangler USPAS course (http://uspas.fnal.gov/materials/sns_front-end.ppt.pdf) and Mario Weiss and
ACCELERATION TECHNIQUES
ACCELERATION TECHNIQUES by Joël Le DuFF (LAL-Orsay) CAS on Intermediate Accelerator Physics Course Trieste 3-4 October 005 CAS, Trieste, October 3-4 005 Bibliography Alexander W. Chao & Maury Tigner :
200 MHz 350 MHz 750 MHz Linac2 RFQ2 202 MHz 0.5 MeV /m Weight : 1000 kg/m Ext. diameter : 45 cm
M. Vretenar, CERN for the HF-RFQ Working Group (V.A. Dimov, M. Garlasché, A. Grudiev, B. Koubek, A.M. Lombardi, S. Mathot, D. Mazur, E. Montesinos, M. Timmins, M. Vretenar) 1 1988-92 Linac2 RFQ2 202 MHz
MEASURES TO REDUCE THE IMPEDANCE OF PARASITIC RESONANT MODES IN THE DAΦNE VACUUM CHAMBER
Frascati Physics Series Vol. X (1998), pp. 371-378 14 th Advanced ICFA Beam Dynamics Workshop, Frascati, Oct. 20-25, 1997 MEASURES TO REDUCE THE IMPEDANCE OF PARASITIC RESONANT MODES IN THE DAΦNE VACUUM
The European Spallation Source. Dave McGinnis Chief Engineer ESS\Accelerator Division IVEC 2013
The European Spallation Source Dave McGinnis Chief Engineer ESS\Accelerator Division IVEC 2013 Overview The European Spallation Source (ESS) will house the most powerful proton linac ever built. The average
Beam BreakUp at Daresbury. Emma Wooldridge ASTeC
Beam BreakUp at Daresbury Emma Wooldridge ASTeC Outline The causes of Beam Breakup (BBU) Types of BBU Why investigate BBU? Possible solutions Causes of BBU There are four main causes. Interaction with
International Technology Recommendation Panel. X-Band Linear Collider Path to the Future. RF System Overview. Chris Adolphsen
International Technology Recommendation Panel X-Band Linear Collider Path to the Future RF System Overview Chris Adolphsen Stanford Linear Accelerator Center April 26-27, 2004 Delivering the Beam Energy
Main Injector Cavity Simulation and Optimization for Project X
Main Injector Cavity Simulation and Optimization for Project X Liling Xiao Advanced Computations Group Beam Physics Department Accelerator Research Division Status Meeting, April 7, 2011 Outline Background
CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH INVESTIGATION OF A RIDGE-LOADED WAVEGUIDE STRUCTURE FOR CLIC X-BAND CRAB CAVITY
CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CLIC Note 1003 INVESTIGATION OF A RIDGE-LOADED WAVEGUIDE STRUCTURE FOR CLIC X-BAND CRAB CAVITY V.F. Khan, R. Calaga and A. Grudiev CERN, Geneva, Switzerland.
Status of the HOM Damped Cavity Project
Status of the HOM Damped Cavity Project E. Weihreter / BESSY for the HOM Damped Cavity Collaboration BESSY, Daresbury Lab, DELTA, MaxLab, NTHU Project funded by the EC under contract HPRI-CT-1999-50011
Detailed Design Report
Detailed Design Report Chapter 2 MAX IV 3 GeV Storage Ring 2.6. The Radio Frequency System MAX IV Facility CHAPTER 2.6. THE RADIO FREQUENCY SYSTEM 1(15) 2.6. The Radio Frequency System 2.6. The Radio Frequency
Waveguides. Metal Waveguides. Dielectric Waveguides
Waveguides Waveguides, like transmission lines, are structures used to guide electromagnetic waves from point to point. However, the fundamental characteristics of waveguide and transmission line waves
DESIGN AND BEAM DYNAMICS STUDIES OF A MULTI-ION LINAC INJECTOR FOR THE JLEIC ION COMPLEX
DESIGN AND BEAM DYNAMICS STUDIES OF A MULTI-ION LINAC INJECTOR FOR THE JLEIC ION COMPLEX Speaker: P.N. Ostroumov Contributors: A. Plastun, B. Mustapha and Z. Conway HB2016, July 7, 2016, Malmö, Sweden
Project X Cavity RF and mechanical design. T. Khabiboulline, FNAL/TD/SRF
Project X Cavity RF and mechanical design T. Khabiboulline, FNAL/TD/SRF TTC meeting on CW-SRF, 2013 Project X Cavity RF and mechanical design T 1 High ß Low ß 0.5 HWR SSR1 SSR2 0 1 10 100 1 10 3 1 10 4
3. (a) Derive an expression for the Hull cut off condition for cylindrical magnetron oscillator. (b) Write short notes on 8 cavity magnetron [8+8]
![3. (a) Derive an expression for the Hull cut off condition for cylindrical magnetron oscillator. (b) Write short notes on 8 cavity magnetron [8+8]](/thumbs/73/68588725.jpg "3. (a) Derive an expression for the Hull cut off condition for cylindrical magnetron oscillator. (b) Write short notes on 8 cavity magnetron [8+8]")
Code No: RR320404 Set No. 1 1. (a) Compare Drift space bunching and Reflector bunching with the help of Applegate diagrams. (b) A reflex Klystron operates at the peak of n=1 or 3 / 4 mode. The dc power
Normal-Conducting Photoinjector for High Power CW FEL
LA-UR-04-5617,-5808 www.arxiv.org: physics/0404109 Normal-Conducting Photoinjector for High Power CW FEL Sergey Kurennoy, LANL, Los Alamos, NM, USA An RF photoinjector capable of producing high continuous
INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad
INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 043 ELECTRONICS AND COMMUNICATION ENGINEERING TUTORIAL BANK Name : MICROWAVE ENGINEERING Code : A70442 Class : IV B. Tech I
A HIGH EFFICIENCY 17GHz TW CHOPPERTRON
1 SLAC 07 A HIGH EFFICIENCY 17GHz TW CHOPPERTRON J. Haimson and B. Mecklenburg Work performed under the auspices of the U.S. Department of Energy SBIR Grant No.DE-FG02-06ER84468 2 SLAC 07 Figure 1. Centerline
Structures for RIA and FNAL Proton Driver
Structures for RIA and FNAL Proton Driver Speaker: Mike Kelly 12 th International Workshop on RF Superconductivity July 11-15, 2005 Argonne National Laboratory A Laboratory Operated by The University of
COUPLER DESIGN CONSIDERATIONS FOR THE ILC CRAB CAVITY
COUPLER DESIGN CONSIDERATIONS FOR THE ILC CRAB CAVITY C. Beard 1), G. Burt 2), A. C. Dexter 2), P. Goudket 1), P. A. McIntosh 1), E. Wooldridge 1) 1) ASTeC, Daresbury laboratory, Warrington, Cheshire,
ALICE SRF SYSTEM COMMISSIONING EXPERIENCE A. Wheelhouse ASTeC, STFC Daresbury Laboratory
ALICE SRF SYSTEM COMMISSIONING EXPERIENCE A. Wheelhouse ASTeC, STFC Daresbury Laboratory ERL 09 8 th 12 th June 2009 ALICE Accelerators and Lasers In Combined Experiments Brief Description ALICE Superconducting
Current Industrial SRF Capabilities and Future Plans
and Future Plans Capabilities in view of Design Engineering Manufacturing Preparation Testing Assembly Taking into operation Future Plans Participate in and contribute to development issues, provide prototypes
(i) Determine the admittance parameters of the network of Fig 1 (f) and draw its - equivalent circuit.
I.E.S-(Conv.)-1995 ELECTRONICS AND TELECOMMUNICATION ENGINEERING PAPER - I Some useful data: Electron charge: 1.6 10 19 Coulomb Free space permeability: 4 10 7 H/m Free space permittivity: 8.85 pf/m Velocity
Progress in High Gradient Accelerator Research at MIT
Progress in High Gradient Accelerator Research at MIT Presented by Richard Temkin MIT Physics and Plasma Science and Fusion Center May 23, 2007 MIT Accelerator Research Collaborators MIT Plasma Science
The BESSY Higher Order Mode Damped Cavity - Further Improvements -
The BESSY Higher Order Mode Damped Cavity - Further Improvements - Ernst Weihreter Reminder of Technical Problems Solutions Conclusions BESSY HOM Damped Cavity Project collaboration: (EC funded) - BESSY
Design and RF Measurements of an X-band Accelerating Structure for the Sparc Project
Design and RF Measurements of an X-band Accelerating Structure for the Sparc Project INFN-LNF ; UNIVERSITY OF ROME LA SAPIENZA ; INFN - MI Presented by BRUNO SPATARO Erice, Sicily, October 9-14; 2005 SALAF
INTRODUCTION TO RADIOFREQUENCY SYSTEMS FOR PARTICLE ACCELERATORS
INTRODUCTION TO RADIOFREQUENCY SYSTEMS FOR PARTICLE ACCELERATORS Elettra-Sincrotrone Trieste S.C.p.A, Italy 39 th International Nathiagali Summer College 4 th 9 th August 2014 2 OVERVIEW Introduction Building
Coupler Electromagnetic Design
Coupler Electromagnetic Design HPC Workshop, TJNAF October 30 November 1, 2002 Yoon Kang Spallation Neutron Source Oak Ridge National Laboratory Contents Fundamental Power Coupler Design Consideration
FAST KICKERS LNF-INFN
ILC Damping Rings R&D Workshop - ILCDR06 September 26-28, 2006 at Cornell University FAST KICKERS R&D @ LNF-INFN Fabio Marcellini for the LNF fast kickers study group* * D. Alesini, F. Marcellini P. Raimondi,
Introduction to Synchrotron Radio Frequency System
3 rd ILSF Advanced School on Synchrotron Radiation and Its Applications September 14-16, 2013 Introduction to Synchrotron Radio Frequency System Khorshid Sarhadi Head of ILSF RF Group 15 Sep. 2013 1 Outline
EC6503 Transmission Lines and WaveguidesV Semester Question Bank
UNIT I TRANSMISSION LINE THEORY A line of cascaded T sections & Transmission lines General Solution, Physicasignificance of the equations 1. Derive the two useful forms of equations for voltage and current
LC Technology Hans Weise / DESY
LC Technology Hans Weise / DESY All you need is... Luminosity! L σ 2 N e x σ y σ y σ x L n b f rep Re-writing reflects the LC choices... L P E b c. m. N e σ σ x y... beam power... bunch population... Ac-to-beam
The Superconducting Radio Frequency Quadrupole Structures Review
The Superconducting Radio Frequency Quadrupole Structures Review Augusto Lombardi INFN- Laboratori Nazionali di Legnaro, via Romea 4 I-35020 Legnaro (PD) Abstract Since 1985 the idea of using the fast
EC Transmission Lines And Waveguides
EC6503 - Transmission Lines And Waveguides UNIT I - TRANSMISSION LINE THEORY A line of cascaded T sections & Transmission lines - General Solution, Physical Significance of the Equations 1. Define Characteristic
New SLED 3 system for Multi-mega Watt RF compressor. Chen Xu, Juwen Wang, Sami Tantawi
New SLED 3 system for Multi-mega Watt RF compressor Chen Xu, Juwen Wang, Sami Tantawi SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, USA Electronic address: chenxu@slac.stanford.edu
DQW HOM Coupler for LHC
DQW HOM Coupler for LHC J. A. Mitchell 1, 2 1 Engineering Department Lancaster University 2 BE-RF-BR Section CERN 03/07/2017 J. A. Mitchell (PhD Student) HL LHC UK Jul 17 03/07/2017 1 / 27 Outline 1 LHC
Development of Superconducting CH-Cavities for the EUROTRANS and IFMIF Project 1
1 AT/P5-01-POSTER Development of Superconducting CH-Cavities for the EUROTRANS and IFMIF Project 1 F. Dziuba 2, H. Podlech 2, M. Buh 2, U. Ratzinger 2, A. Bechtold 3, H. Klein 2 2 Institute for Applied
LOW BETA CAVITY DEVELOPMENT FOR AN ATLAS INTENSITY UPGRADE
LOW BETA CAVITY DEVELOPMENT FOR AN ATLAS INTENSITY UPGRADE M. P. Kelly, Z. A. Conway, S. M. Gerbick, M. Kedzie, T. C. Reid, R. C. Murphy, B. Mustapha, S.H. Kim, P. N. Ostroumov, Argonne National Laboratory,
Diagnostics I M. Minty DESY
Diagnostics I M. Minty DESY Introduction Beam Charge / Intensity Beam Position Summary Introduction Transverse Beam Emittance Longitudinal Beam Emittance Summary Diagnostics I Diagnostics II Synchrotron
CLIC Power Extraction and Transfer Structure. (2004)
CLIC Power Extraction and Transfer Structure. (24) CLIC linac subunit layout: CLIC accelerating Structure (HDS) Main beam 3 GHz, 2 MW per structure Drive beam (64 A) CLIC Power Extraction and Transfer
Present and future beams for SHE research at GSI W. Barth, GSI - Darmstadt
Present and future beams for SHE research at GSI W. Barth, GSI - Darmstadt 1. Heavy Ion Linear Accelerator UNILAC 2. GSI Accelerator Facility Injector for FAIR 3. Status Quo of the UNILAC-performance 4.
STABILITY CONSIDERATIONS
Abstract The simple theory describing the stability of an RF system with beam will be recalled together with its application to the LEP case. The so-called nd Robinson stability limit can be pushed by
Photograph of the rectangular waveguide components
Waveguides Photograph of the rectangular waveguide components BACKGROUND A transmission line can be used to guide EM energy from one point (generator) to another (load). A transmission line can support
Prospects for an Inductive Output Tube (IOT) Based Source
Prospects for an Inductive Output Tube (IOT) Based Source Brian Beaudoin February, 10 2016 Institute for Research in Electronics & Applied Physics 1 https://en.wikipedia.org/wiki/high_frequency_active_auroral_research_program.
cyclotron RF systems sb/cas10061/1
cyclotron RF systems sb/cas10061/1 outline cyclotron basics resonator design techniques transmission line 3D finite element tuning power coupling RF control flat topping some specific examples sb/cas100562
Thermionic Bunched Electron Sources for High-Energy Electron Cooling
Thermionic Bunched Electron Sources for High-Energy Electron Cooling Vadim Jabotinski 1, Yaroslav Derbenev 2, and Philippe Piot 3 1 Institute for Physics and Technology (Alexandria, VA) 2 Thomas Jefferson
Stability Analysis of C-band 500-kW Klystron with Multi-cell. Output cavity
Stability Analysis of C-band 5-kW Klystron with Multi-cell Output cavity Jihyun Hwang Department of Physics, POSTECH, Pohang 37673 Sung-Ju Park and Won Namkung Pohang Accelerator Laboratory, Pohang 37874
The design of a radio frequency quadrupole LINAC for the RIB project at VECC Kolkata
PRAMANA cfl Indian Academy of Sciences Vol. 59, No. 6 journal of December 2002 physics pp. 957 962 The design of a radio frequency quadrupole LINAC for the RIB project at VECC Kolkata V BANERJEE 1;Λ, ALOK
The impedance budget of the CERN Proton Synchrotron (PS)
The impedance budget of the CERN Proton Synchrotron (PS) Serena Persichelli CERN Hadron Synchrotron Collective effects University of Rome La Sapienza serena.persichelli@cern.ch Why do we study the beam
High Power, Magnet-free, Waveguide Based Circulator Using Angular-Momentum Biasing of a Resonant Ring
SLAC-R-1080 High Power, Magnet-free, Waveguide Based Circulator Using Angular-Momentum Biasing of a Resonant Ring Jeffrey Neilson and Emilio Nanni August 18, 2017 Prepared for Calabazas Creek Research,
CAGE CAVITY: A LOW COST, HIGH PERFORMANCE SRF ACCELERATING STRUCTURE*
CAGE CAVITY: A LOW COST, HIGH PERFORMANCE SRF ACCELERATING STRUCTURE* J. Noonan, T.L. Smith, M. Virgo, G.J. Waldsmidt, Argonne National Laboratory J.W. Lewellen, Los Alamos National Laboratory Abstract
THE U. S. RIA PROJECT SRF LINAC*
THE U. S. RIA PROJECT SRF LINAC* K. W. Shepard, ANL, Argonne, IL 60540, USA Abstract The nuclear physics community in the U. S. has reaffirmed the rare isotope accelerator facility (RIA) as the number
RF Cavity Design. 1 Introduction the outline of a general cavity design procedure. E. Jensen CERN, Geneva, Switzerland
RF Cavity Design E. Jensen CERN, Geneva, Switzerland Abstract After a short overview of a general approach to cavity design, we sketch the derivation of waveguide modes from plane waves and of cavity fields
Design Topics for Superconducting RF Cavities and Ancillaries
Design Topics for Superconducting RF Cavities and Ancillaries H. Padamsee 1 Cornell University, CLASSE, Ithaca, New York Abstract RF superconductivity has become a major subfield of accelerator science.
Tutorial on Design of RF system for Indus Accelerator. Maherdra Lad Head, Radio Frequency Systems Division RRCAT, Indore
Tutorial on Design of RF system for Indus Accelerator Maherdra Lad Head, Radio Frequency Systems Division RRCAT, Indore Basic principle of RF Acceleration RF Power Amplifier The RF source supplies power
UNIT - V WAVEGUIDES. Part A (2 marks)
Part A (2 marks) UNIT - V WAVEGUIDES 1. What is the need for guide termination? (Nov / Dec 2011) To avoid reflection loss. The termination should provide a wave impedance equal to that of the transmission
RF Power Consumption in the ESS Spoke LINAC
FREIA Report 23/ January 23 DEPARTMENT OF PHYSICS AND ASTRONOMY UPPSALA UNIVERSITY RF Power Consumption in the ESS Spoke LINAC ESS TDR Contribution V.A. Goryashko, V. Ziemann, T. Lofnes, R. Ruber Uppsala
Third Harmonic Cavity Status
Third Harmonic Cavity Status General parameters Cavity design Main coupler calculation HOM analysis and HOM coupler design Lorentz Forces and Stress analysis Summary General parameters Third harmonic cavity
SRF Advances for ATLAS and Other β<1 Applications
SRF Advances for ATLAS and Other β
Waveguides GATE Problems
Waveguides GATE Problems One Mark Questions. The interior of a 20 20 cm cm rectangular waveguide is completely 3 4 filled with a dielectric of r 4. Waves of free space wave length shorter than..can be
O. Napoly LC02, SLAC, Feb. 5, Higher Order Modes Measurements
O. Napoly LC02, SLAC, Feb. 5, 2002 Higher Order Modes Measurements with Beam at the TTF Linac TTF Measurements A collective effort including most of Saclay, Orsay and DESY TTF physicists : S. Fartoukh,
RF STATUS OF SUPERCONDUCTING MODULE DEVELOPMENT SUITABLE FOR CW OPERATION: ELBE CRYOSTATS
RF STATUS OF SUPERCONDUCTING MODULE DEVELOPMENT SUITABLE FOR CW OPERATION: ELBE CRYOSTATS J. Teichert, A. Büchner, H. Büttig, F. Gabriel, P. Michel, K. Möller, U. Lehnert, Ch. Schneider, J. Stephan, A.
Raja Ramanna Center for Advanced Technology, Indore, India
Electromagnetic Design of g = 0.9, 650 MHz Superconducting Radiofrequency Cavity Arup Ratan Jana 1, Vinit Kumar 1, Abhay Kumar 2 and Rahul Gaur 1 1 Materials and Advanced Accelerator Science Division 2
Calibrating the Cavity Voltage. Presentation of an idea
Calibrating the Cavity Voltage. Presentation of an idea Stefan Wilke, DESY MHF-e 21st ESLS rf meeting Kraków, 15th/16th nov 2017 Accelerators at DESY. linear and circular Page 2 Accelerators at DESY. linear
A Design of a 3rd Harmonic Cavity for the TTF 2 Photoinjector
TESLA-FEL 2002-05 A Design of a 3rd Harmonic Cavity for the TTF 2 Photoinjector J. Sekutowicz, R. Wanzenberg DESY, Notkestr. 85, 22603 Hamburg, Germany W.F.O. Müller, T. Weiland TEMF, TU Darmstadt, Schloßgartenstr.
Crab Cavity Systems for Future Colliders. Silvia Verdú-Andrés, Ilan Ben-Zvi, Qiong Wu (Brookhaven National Lab), Rama Calaga (CERN)
International Particle Accelerator Conference Copenhagen (Denmark) 14-19 May, 2017 Crab Cavity Systems for Future Colliders Silvia Verdú-Andrés, Ilan Ben-Zvi, Qiong Wu (Brookhaven National Lab), Rama Calaga
X-Band Linear Collider Report*
SLAC DOE Program Review X-Band Linear Collider Path to the Future X-Band Linear Collider Report* D. L. Burke NLC Program Director * Abstracted from recent presentations to the International Technical Recommendation
LHC TRANSVERSE FEEDBACK SYSTEM: FIRST RESULTS OF COMMISSIONING. V.M. Zhabitsky XXI Russian Particle Accelerator Conference
LHC TRANSVERSE FEEDBACK SYSTEM: FIRST RESULTS OF COMMISSIONING V.M. Zhabitsky XXI Russian Particle Accelerator Conference 28.09-03.10.2008, Zvenigorod LHC Transverse Feedback System: First Results of Commissioning
Room Temperature High Repetition Rate RF Structures for Light Sources
Room Temperature High Repetition Rate RF Structures for Light Sources Sami G. Tantawi SLAC Claudio Pellegrini, R. Ruth, J. Wang. V. Dolgashev, C. Bane, Zhirong Huang, Jeff Neilson, Z. Li Outline Motivation
Triple-spoke compared with Elliptical-cell Cavities
Triple-spoke compared with Elliptical-cell Cavities Ken Shepard - ANL Physics Division 2th International Workshop on RF Superconductivity Argonne National Laboratory Operated by The University of Chicago
KEK ERL CRYOMODULE DEVELOPMENT
KEK ERL CRYOMODULE DEVELOPMENT H. Sakai*, T. Furuya, E. Kako, S. Noguchi, M. Sato, S. Sakanaka, T. Shishido, T. Takahashi, K. Umemori, K. Watanabe and Y. Yamamoto KEK, 1-1, Oho, Tsukuba, Ibaraki, 305-0801,
EC 1402 Microwave Engineering
SHRI ANGALAMMAN COLLEGE OF ENGINEERING & TECHNOLOGY (An ISO 9001:2008 Certified Institution) SIRUGANOOR,TRICHY-621105. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING EC 1402 Microwave Engineering
Project of RF System for 2.2 GeV Electron Storage Ring Zelenograd SR Source.
Project of RF System for 2.2 GeV Electron Storage Ring Zelenograd SR Source. I.K. Sedlyarov V.S. Arbuzov, E.I Gorniker, A.A. Kondakov, S.A. Krutikhin, G.Ya. Kurkin, I.V.Kuptsov, V.N. Osipov, V.M. Petrov,
MAX II RF system 100 MHz technology Lars Malmgren 10th ESLS RF Meeting Dortmund September 27-28, 2006
MAX II RF system 1 MHz technology Lars Malmgren 1th ESLS RF Meeting Dortmund September 27-28, 26 Facts and figures MAX-II Frequency [MHz] Harmonic number No of cavity cells No of transmitters Cell radius
A Design Study of a 100-MHz Thermionic RF Gun for the ANL XFEL-O Injector
A Design Study of a 100-MHz Thermionic RF Gun for the ANL XFEL-O Injector A. Nassiri Advanced Photon Source For ANL XFEL-O Injector Study Group M. Borland (ASD), B. Brajuskovic (AES), D. Capatina (AES),
NEW OPPORTUNITIES IN VACUUM ELECTRONICS USING PHOTONIC BAND GAP STRUCTURES
NEW OPPORTUNITIES IN VACUUM ELECTRONICS USING PHOTONIC BAND GAP STRUCTURES J. R. Sirigiri, C. Chen, M. A. Shapiro, E. I. Smirnova, and R. J. Temkin Plasma Science and Fusion Center Massachusetts Institute
Low-Level RF. S. Simrock, DESY. MAC mtg, May 05 Stefan Simrock DESY
Low-Level RF S. Simrock, DESY Outline Scope of LLRF System Work Breakdown for XFEL LLRF Design for the VUV-FEL Cost, Personpower and Schedule RF Systems for XFEL RF Gun Injector 3rd harmonic cavity Main
Gyroklystron Research at CCR
Gyroklystron Research at CCR RLI@calcreek.com Lawrence Ives, Michael Read, Jeff Neilson, Philipp Borchard and Max Mizuhara Calabazas Creek Research, Inc. 20937 Comer Drive, Saratoga, CA 95070-3753 W. Lawson
Development of a 20-MeV Dielectric-Loaded Accelerator Test Facility
SLAC-PUB-11299 Development of a 20-MeV Dielectric-Loaded Accelerator Test Facility S.H. Gold, et al. Contributed to 11th Advanced Accelerator Concepts Workshop (AAC 2004), 06/21/2004--6/26/2004, Stony
REVIEW ON SUPERCONDUCTING RF GUNS
REVIEW ON SUPERCONDUCTING RF GUNS D. Janssen #, A. Arnold, H. Büttig, U. Lehnert, P. Michel, P. Murcek, C. Schneider, R. Schurig, F. Staufenbiel, J. Teichert, R. Xiang, Forschungszentrum Rossendorf, Germany.
High Gradient Studies at the NLC Test Accelerator (NLCTA)
Chris Adolphsen High Gradient Studies at the NLC Test Accelerator (NLCTA) NLCTA Linac RF Unit (One of Two) Contributors C. Adolphsen, G. Bowden, D. Burke, J. Cornuelle, S. Dobert, V. Dolgashev, J. Frisch,
HOM COUPLER ALTERATIONS FOR THE LHC DQW CRAB CAVITY
HOM COUPLER ALTERATIONS FOR THE LHC DQW CRAB CAVITY J. A. Mitchell 1, 2, G. Burt 2, N. Shipman 1, 2, Lancaster University, Lancaster, UK B. Xiao, S.Verdú-Andrés, Q. Wu, BNL, Upton, NY 11973, USA R. Calaga,
St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad
St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad 500014. Department of Electronics and Communication Engineering SUB: MICROWAVE ENGINEERING SECTION: ECE IV A & B NAME OF THE FACULTY: S RAVI KUMAR,T.SUDHEER
ADVANCES IN CW ION LINACS*
Abstract Substantial research and development related to continuous wave (CW) proton and ion accelerators is being performed at ANL. A 4-meter long 60.625-MHz normal conducting (NC) CW radio frequency
Drive Beam Photo-injector Option for the CTF3 Nominal Phase
CTF3 Review Drive Beam Photo-injector Option for the CTF3 Nominal Phase Motivation CTF3 Drive Beam Requirements CTF3 RF gun design The Laser (I. Ross / RAL) The Photocathode Cost estimate Possible schedule
CST MWS simulation of the SARAF RFQ 1.5 MeV/nucleon proton/deuteron accelerator
CST MWS simulation of the SARAF RFQ 1.5 MeV/nucleon proton/deuteron accelerator Jacob Rodnizki SARAF Soreq NRC APril 19-21 th, 2010 Outline 1. SARAF accelerator 2. Presentation of the four rods RFQ 3.
APPLIED ELECTROMAGNETICS: EARLY TRANSMISSION LINES APPROACH
APPLIED ELECTROMAGNETICS: EARLY TRANSMISSION LINES APPROACH STUART M. WENTWORTH Auburn University IICENTBN Nlfll 1807; WILEY 2 OO 7 ; Ttt^TlLtftiTTu CONTENTS CHAPTER1 Introduction 1 1.1 1.2 1.3 1.4 1.5