Cavity BPM With Dipole-Mode Selective Coupler
|
|
- Kellie Woods
- 5 years ago
- Views:
Transcription
1 Cavity BPM With Dipole-Mode Selective Coupler Zenghai Li Advanced Computations Department Stanford Linear Accelerator Center Presented at PAC23 Portland, Oregon. May 12-16, 23 Work supported by the U.S. DOE Contract No. DE-AC3-76SF1.
2 Contents Selective coupling scheme for cavity BPM Resolution limit Bandwidth Tolerance Test results of a NLC prototype Summary
3 Authors Zenghai Li Ronald Johnson Stephen R. Smith, SLAC, USA Takashi Naito, KEK, Japan; Jeffrey Rifkin, Lyncean Technologies, USA
4 NLC Q-BPM Almost all quadrupoles supports a BPM Function is to align beam to quads (or vice versa) Quantities ~28 Q BPM requirements: Parameter Value Conditions Resolution 3 nm 1 1 e - single bunch Position Stability 1 µm over 24 hours (!) Position Accuracy 2 µm With respect to the quad magnetic center Position Dynamic ±2 mm Range Charge Dynamic Range 1 8 to e - per bunch Number of 1-9 or 1-19 bunches Bunch spacing 2.8 ns or 1.4 ns Chose to use cavity BPM
5 Conventional Cavity BPM design Coupler couple to both TM 1 and TM 11 modes Need hybrid to cancel common mode Tight tolerances on geometry schematic Sum Port Sum diff Difference Port
6 More On Using Magnetic Coupling T. Shintake, C-band structure design. Vladimir Vogel, BINP, for ATF (from a paper by Marc Ross) NLC DDS structure. Using slots to damp dipole wakefields. Signal used for SBPM. Micron resolution.
7 Cavity BPM With TM 11 -mode Selective Coupler signal Dipole frequency: GHz Dipole mode: TM 11 Coupling to waveguide: magnetic Beam x-offset couple to y port Sensitivity: 1.6mV/nC/µm ( V/C/mm) signal Couple to dipole (TM 11 ) only Does not couple to TM 1 Low Q with narrow cavity gap May need to damp TM 1 OR, use stainless steel to lower Q
8 TM 11 Selective-coupling Scheme Port to coax Beam pipe M coupling NO coupling Slot modes
9 R or Z Waveguide Orientation R-orientation signal Z-orientation signal R or Z waveguide orientation to fit into different space.
10 Waveguide Signal With Beam Excitation Cavity height Guide height Guide R pos Pipe radius Q dipole W L amplitude 3mm 3mm 8mm 6mm 1 1.3E12 Beam impedance Y-port spectrum F (GHz) Beam off in x plane y-port only picks up dipole signal Total rejection of TM 1 mode achieved by the selective coupling scheme
11 Intrinsic Resolution Resolution of BPM limited by signal/noise ratio Signal voltage determined by energy loss by the beam and the external coupling V( q, x) = q Z β ω k 1+ β Q 2 loss L x 2 k loss, tm11 (V/nC/mm 2 ) Cavity gap (mm) Pipe radius (mm) K loss, TM1 (V/nC/mm 2 ) Cavity gap (mm) Pipe radius (mm) Thermal noise determined by temperature and bandwidth V = Z kt F Signal/noise ratio independent of bandwidth Resolution limit.1-nm at room temperature for 1-nC charge beam Signal/thermal noise ratio Cavity gap (mm) 8 3 1nm beam offset Pipe radius (mm)
12 Bandwidth Adjust depth to design for different Q ext dipole Q ext cavity gap (mm) r-guide (mm) Q ext of dipole mode sensitive to depth of coupling slot (r-location of the waveguide), insensitive to beam pipe size and cavity gap. Wall loss Q about 4 for 3-mm cavity gap at X-band Q ext can very within a wide range by changing the slot depth Flexibility for design to meet different coupling β requirements. Broadband cavity BPM can be realized with this scheme.
13 Tolerance Frequency: -.7MHz/µm in cell radius. Can be made tunable, but need to keep cavity symmetry We consider the impact of machining errors in coupling slots: x, θ and r x θ r Both x, θ errors result in non-zero projection of the azimuthal magnetic field of the TM 1 mode along side the slot opening, causing coupling of the TM 1 mode to the waveguide and x-y coupling. r error may shift electric center of modes, results in potential TM 1 leakage and x-y coupling.
14 Tolerance On Slots x/ θ misalignment x X-port spectrum Y-port spectrum x=.mm F (GHz) Q ext y-port offset in x (mm) V TM1 /V TM beam offset=1-nm x=.1 mm Cavity gap (mm) Pipe radius (mm) TM 1 /TM 11 signal ratio is about 2 for x=1µm, 1nm beam offset r misalignment r 6 Y-port spectrum X-port spectrum r=-.mm F (Hz) For a misalignment in x of 1µm, one can achieve resolution near thermal noise limit of about.1nm with modern electronics. Tolerance on r Significant looser than on x/ θ.
15 NLC Cavity BPM Cold Test Model Phase cavity & pickup Ω coax selective coupler Frequency (GHz) Cavity gap R beam pipe Waveguide r slot x/y BPM cavity 3-mm 6-mm 3mm 18mm 8-mm Frequency response measured using antenna excitation A resolution better than 1-nm obtained.
16 Conclusion The selective coupling scheme can reject common mode effectively Provides clean signal for position measurement. Advantages: Simplicity of geometry Loose tolerance. Nanometer resolution can be achieved with loose tolerance requirements. Can be designed for both narrow and broadband applications.
17 Phase-Cavity With 2mm Feedthrough.2mm
NanoBPM tests in the ATF extraction line
NLC - The Next Linear Collider Project NanoBPM tests in the ATF extraction line Calibrate movers (tilters) and BPM s Understand and test dynamic range and resolution June 2003 Marc Ross What are the uses
More informationCavity BPMs for the NLC
SLAC-PUB-9211 May 2002 Cavity BPMs for the NLC Ronald Johnson, Zenghai Li, Takashi Naito, Jeffrey Rifkin, Stephen Smith, and Vernon Smith Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo
More informationNext Linear Collider Beam Position Monitors
NLC - The Project Beam Position Monitors Steve Smith SLAC October 23, 2002 What s novel, extreme, or challenging? Push resolution frontier Novel cavity BPM design for high resolution, stability Push well
More informationDesign of S-band re-entrant cavity BPM
Nuclear Science and Techniques 20 (2009) 133 139 Design of S-band re-entrant cavity BPM LUO Qing SUN Baogen * HE Duohui National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology,
More informationPrecision RF Beam Position Monitors for Measuring Beam Position and Tilt Progress Report
Precision RF Beam Position Monitors for Measuring Beam Position and Tilt Progress Report UC Berkeley Senior Personnel Yury G. Kolomensky Collaborating Institutions Stanford Linear Accelerator Center: Marc
More informationATF2 Project at KEK. T. Tauchi, KEK at Orsay 17 June, 2005
ATF2 Project at KEK T. Tauchi, KEK at Orsay 17 June, 2005 IP Final Goal Ensure collisions between nanometer beams; i.e. luminosity for ILC experiment Reduction of Risk at ILC FACILITY construction, first
More informationBPM requirements for energy spectrometry
BPM requirements for energy spectrometry Stewart T. Boogert University College London UK (UCL, Cambridge) SB, Alexey Lyapin, David Miller, Mark Slater, David Ward, Mathew Wing US (SLAC, LLNL, LBNL, Oregon,
More informationA prototype S-band BPM system for the ILC energy spectrometer
EUROTeV-Report-2008-072 A prototype S-band BPM system for the ILC energy spectrometer A. Lyapin, B. Maiheu, D. Attree, M. Wing, S. Boogert, G. Boorman, M. Slater, D. Ward January 12, 2009 Abstract This
More informationPhysics Requirements Document Document Title: SCRF 1.3 GHz Cryomodule Document Number: LCLSII-4.1-PR-0146-R0 Page 1 of 7
Document Number: LCLSII-4.1-PR-0146-R0 Page 1 of 7 Document Approval: Originator: Tor Raubenheimer, Physics Support Lead Date Approved Approver: Marc Ross, Cryogenic System Manager Approver: Jose Chan,
More informationInfluences of a Beam-Pipe Discontinuity on the Signals of a Nearby Beam Position Monitor (BPM)
Internal Report DESY M 1-2 May 21 Influences of a Beam-Pipe Discontinuity on the Signals of a Nearby Beam Position Monitor (BPM) A.K. Bandyopadhyay, A. Joestingmeier, A.S. Omar, R. Wanzenberg Deutsches
More informationHOM/LOM Coupler Study for the ILC Crab Cavity*
SLAC-PUB-1249 April 27 HOM/LOM Coupler Study for the ILC Crab Cavity* L. Xiao, Z. Li, K. Ko, SLAC, Menlo Park, CA9425, U.S.A Abstract The FNAL 9-cell 3.9GHz deflecting mode cavity designed for the CKM
More informationOVERVIEW OF RECENT TRENDS AND DEVELOPMENTS FOR BPM SYSTEMS
OVERVIEW OF RECENT TRENDS AND DEVELOPMENTS FOR BPM SYSTEMS Manfred Wendt Fermilab Assembled with great help of the colleagues from the beam instrumentation community! Contents Introduction BPM Pickup Broadband
More informationNumerical Simulation of &hepep-i1 Beam Position Monitor*
SLACPUB957006 September 1995 Numerical Simulation of &hepepi1 Beam Position Monitor* N. Kurita D. Martin C.K. Ng S. Smith Stanford Linear Accelerator Center Stanford University Stanford CA 94309USA and
More informationInternational 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
More informationCERN 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.
More informationO. 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,
More informationLawrence Berkeley Laboratory UNIVERSITY OF CALIFORNIA
d e Lawrence Berkeley Laboratory UNIVERSITY OF CALIFORNIA Accelerator & Fusion Research Division I # RECEIVED Presented at the International Workshop on Collective Effects and Impedance for B-Factories,
More informationFabrication Techniques for the X-band Accelerator Structures. Juwen Wang WORKSHOP ON X-BAND RF TECHNOLOGY FOR FELs March 5, 2010
Fabrication Techniques for the X-band Accelerator Structures Juwen Wang WORKSHOP ON X-BAND RF TECHNOLOGY FOR FELs March 5, 2010 Outline 1. Introduction Brief history Achievements 2. Basics of X-Band Accelerator
More informationHOM Based Diagnostics at the TTF
HOM Based Diagnostics at the TTF Nov 14, 2005 Josef Frisch, Nicoleta Baboi, Linda Hendrickson, Olaf Hensler, Douglas McCormick, Justin May, Olivier Napoly, Rita Paparella, Marc Ross, Claire Simon, Tonee
More informationHigh 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,
More informationBeam Position Monitors: Detector Principle and Signal Estimation. Peter Forck. Gesellschaft für Schwerionenforschung GSI, Darmstadt, Germany
Outline: Beam Position Monitors: Detector Principle and Signal Estimation Peter Forck Gesellschaft für Schwerionenforschung GSI, Darmstadt, Germany General discussion on BPM features and specification
More informationDetection of Beam Induced Dipole-Mode Signals in the SLC S-Band Structures* Abstract
-. SLAC-PUB-79 June 1997 Detection of Beam nduced Dipole-Mode Signals in the SLC S-Band Structures* M. Seidel, C. Adolphsen, R. Assmann, D.H. Whittum Stanford Linear Accelerator Center, Stanford University,
More informationUsing Higher Order Modes in the Superconducting TESLA Cavities for Diagnostics at DESY
Using Higher Order Modes in the Superconducting TESLA Cavities for Diagnostics at FLASH @ DESY N. Baboi, DESY, Hamburg for the HOM team : S. Molloy 1, N. Baboi 2, N. Eddy 3, J. Frisch 1, L. Hendrickson
More informationCAVITY BPM DESIGNS, RELATED ELECTRONICS AND MEASURED PERFORMANCES
TUOC2 Proceedings of DIPAC9, Basel, Switzerland CAVITY BPM DESIGNS, ELATED ELECTONICS AND MEASUED PEFOMANCES D. Lipka, DESY, Hamburg, Germany Abstract Future accelerators like the International Linear
More informationACE3P and Applications to HOM Power Calculation in Cornell ERL
ACE3P and Applications to HOM Power Calculation in Cornell ERL Liling Xiao Advanced Computations Group SLAC National Accelerator Laboratory HOM10 Workshop, Cornell, October 11-13, 2010 Work supported by
More informationFAST 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
More informationThe HOM measurement of a TESLA cavity (Z84) for HOM-BPM and cavity alignment
The HOM measurement of a TESLA cavity (Z84) for HOM-BPM and cavity alignment Ken.Watanabe:GUAS/AS (KEK) : presenter Hitoshi.Hayano, Shuichi.Noguchi, Eiji.Kako, Toshio.Shishido (KEK) Joint DESY and University
More informationIndependent Measurement of Two Beams in an IP Feedback BPM (response to a question asked at LCWS05 )
Independent Measurement of Two Beams in an IP Feedback BPM (response to a question asked at LCWS05 ) March 22, 2005 Steve Smith IP Feedback in 2-mr Crossing Scheme Both incoming and outgoing beams traverse
More informationQ d d f - QdOTa3 6. Stanford Linear Acceleratori Center, Stanford University, Stanford, CA 94309
SLAC-PUB-7349 November 1996 Q d d f - QdOTa3 6 -- /oz- Numerical Modeling of Bearn-Environment nteractions in the PEP-1 B-Factory C-K Ng, K KO, Z Li and X E Lin Stanford Linear Acceleratori Center, Stanford
More informationSTATUS OF THE ILC CRAB CAVITY DEVELOPMENT
STATUS OF THE ILC CRAB CAVITY DEVELOPMENT SLAC-PUB-4645 G. Burt, A. Dexter, Cockcroft Institute, Lancaster University, LA 4YR, UK C. Beard, P. Goudket, P. McIntosh, ASTeC, STFC, Daresbury laboratories,
More informationBeam Diagnostics, Low Level RF and Feedback for Room Temperature FELs. Josef Frisch Pohang, March 14, 2011
Beam Diagnostics, Low Level RF and Feedback for Room Temperature FELs Josef Frisch Pohang, March 14, 2011 Room Temperature / Superconducting Very different pulse structures RT: single bunch or short bursts
More informationSIGNAL TRANSMISSION CHARACTERISTICS IN STRIPLINE-TYPE BEAM POSITION MONITOR
SIGNAL TRANSISSION CHARACTERISTICS IN STRIPLINE-TYPE BEA POSITION ONITOR T. Suwada, KEK, Tsukuba, Ibaraki 305-0801, Japan Abstract A new stripline-type beam position monitor (BP) system is under development
More informationCavity-type Beam Position Monitors for the SASE FEL at the TESLA Test Facility
TESLA-FEL 2003-03 Cavity-type Beam Position Monitors for the SASE FEL at the TESLA Test Facility R. Lorenz 1, S. Sabah 2,H.J.Schreiber 3, H. Waldmann 3 1 Westdeutscher Rundfunk, 50600 Köln 2 VI-TELEFILTER
More informationSIGNAL TRANSMISSION CHARACTERISTICS IN STRIPLINE-TYPE BEAM POSITION MONITOR
Proceedings of IBIC01, Tsukuba, Japan SIGNAL TRANSISSION CHARACTERISTICS IN STRIPLINE-TYPE BEA POSITION ONITOR T. Suwada, KEK, Tsukuba, Ibaraki 305-0801, Japan Abstract A new stripline-type beam position
More informationDesign of the 15 GHz BPM test bench for the CLIC test facility to perform precise stretchedwire
Home Search Collections Journals About Contact us My IOPscience Design of the 15 GHz BPM test bench for the CLIC test facility to perform precise stretchedwire RF measurements This content has been downloaded
More informationDiagnostics 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
More informationA Wideband Magneto-Electric Dipole Antenna with Improved Feeding Structure
ADVANCED ELECTROMAGNETICS, VOL. 5, NO. 2, AUGUST 2016 ` A Wideband Magneto-Electric Dipole Antenna with Improved Feeding Structure Neetu Marwah 1, Ganga P. Pandey 2, Vivekanand N. Tiwari 1, Sarabjot S.
More informationRF 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
More informationResonant Excitation of High Order Modes in the 3.9 GHz Cavity of LCLS-II Linac
Resonant Excitation of High Order Modes in the 3.9 GHz Cavity of LCLS-II Linac LCLS-II TN-16-05 9/12/2016 A. Lunin, T. Khabiboulline, N. Solyak, A. Sukhanov, V. Yakovlev April 10, 2017 LCLSII-TN-16-06
More informationThe 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
More informationDQW 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
More informationPerformance of the Prototype NLC RF Phase and Timing Distribution System *
SLAC PUB 8458 June 2000 Performance of the Prototype NLC RF Phase and Timing Distribution System * Josef Frisch, David G. Brown, Eugene Cisneros Stanford Linear Accelerator Center, Stanford University,
More informationHIGHER ORDER MODES FOR BEAM DIAGNOSTICS IN THIRD HARMONIC 3.9 GHZ ACCELERATING MODULES *
HIGHER ORDER MODES FOR BEAM DIAGNOSTICS IN THIRD HARMONIC 3.9 GHZ ACCELERATING MODULES * N. Baboi #, N. Eddy, T. Flisgen, H.-W. Glock, R. M. Jones, I. R. R. Shinton, and P. Zhang # # Deutsches Elektronen-Synchrotron
More informationBeam Test Results of High Q CBPM prototype for SXFEL *
Beam Test Results of High Q CBPM prototype for SXFEL * Jian Chen ( 陈健 ),;) Yong-bin Leng ( 冷用斌 ) ;) Lu-yang Yu ( 俞路阳 ) Long-wei Lai ( 赖龙伟 ) Ren-xian Yuan ( 袁任贤 ) Shanghai Institute of Applied Physics,
More informationPerformance Measurements of SLAC's X-band. High-Power Pulse Compression System (SLED-II)
SLAC PUB 95-6775 June 995 Performance Measurements of SLAC's X-band High-Power Pulse Compression System (SLED-II) Sami G. Tantawi, Arnold E. Vlieks, and Rod J. Loewen Stanford Linear Accelerator Center
More informationSIGNAL ELECTRIC FIELD MAGNETIC FIELD # 1 (#2) #3 (# 4) WAVEGUIDE VACUUM CHAMBER BEAM PIPE VACUUM CHAMBER
New Microwave Beam Position Monitors for the TESLA Test Facility FEL T. Kamps and R. Lorenz DESY Zeuthen, Platanenallee 6, D-15738 Zeuthen Abstract. Beam-based alignment is essential for the operation
More informationDesign 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
More informationBESSY VSR: SRF challenges and developments for a variable pulse-length next generation light source
BESSY VSR: SRF challenges and developments for a variable pulse-length next generation light source Institut SRF - Wissenschaft und Technologie (FG-ISRF) Adolfo Vélez et al. SRF17 Lanzhou, 17-21/7/2017
More informationSTATE OF THE ART IN EM FIELD COMPUTATION*
SLAC-PUB-12020 August 2006 STATE OF THE ART IN EM FIELD COMPUTATION* C. Ng, V. Akcelik, A. Candel, S. Chen, N. Folwell, L. Ge, A. Guetz, H. Jiang, A. Kabel, L.-Q. Lee, Z. Li, E. Prudencio, G. Schussman,
More informationAttosecond Diagnostics of Muti GeV Electron Beams Using W Band Deflectors
Attosecond Diagnostics of Muti GeV Electron Beams Using W Band Deflectors V.A. Dolgashev, P. Emma, M. Dal Forno, A. Novokhatski, S. Weathersby SLAC National Accelerator Laboratory FEIS 2: Femtosecond Electron
More informationDesign and Fabrication of a Radiation-Hard 500-MHz Digitizer Using Deep Submicron Technology
Design and Fabrication of a Radiation-Hard 500-MHz Digitizer Using Deep Submicron Technology Project Summary K.K. Gan *, M.O. Johnson, R.D. Kass, J. Moore Department of Physics, The Ohio State University
More informationNumerical Modeling of Beam-Environment Interactions in the PEP-II B-Factoryl
SLAC-PUB-7349 November 996 Numerical Modeling of Beam-Environment nteractions in the PEP- B-Factoryl C.-K. Ng, K. Ko, Z. Li and X. E. Lin Stanford Linear Accelerator Center, Stanford University, Stanford,
More informationOutline. I. Progress and R&D plan on SRF cavity. II. HOM damping for low-risk and FFAG lattice erhic. III. Summary. Wencan Xu 2
BROOKHAVEN SCIENCE ASSOCIATES SRF R&D for erhic On behalf of team Brookhaven National Laboratory JLEIC Collaboration workshop 1 Outline I. Progress and R&D plan on SRF cavity II. HOM damping for low-risk
More informationKEK 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,
More informationW-band vector network analyzer based on an audio lock-in amplifier * Abstract
SLAC PUB 7884 July 1998 W-band vector network analyzer based on an audio lock-in amplifier * R. H. Siemann Stanford Linear Accelerator Center, Stanford University, Stanford CA 94309 Abstract The design
More informationX-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
More informationDesign of a Sideband-Separating Balanced SIS Mixer Based on Waveguide Hybrids
ALMA Memo 316 20 September 2000 Design of a Sideband-Separating Balanced SIS Mixer Based on Waveguide Hybrids S. M. X. Claude 1 and C. T. Cunningham 1, A. R. Kerr 2 and S.-K. Pan 2 1 Herzberg Institute
More informationProjects in microwave theory 2017
Electrical and information technology Projects in microwave theory 2017 Write a short report on the project that includes a short abstract, an introduction, a theory section, a section on the results and
More informationMEASURES 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
More informationNew apparatus for precise synchronous phase shift measurements in storage rings 1
New apparatus for precise synchronous phase shift measurements in storage rings 1 Boris Podobedov and Robert Siemann Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 Measuring
More informationFast Intra-Train Feedback Systems for a Future Linear Collider
Fast Intra-Train Feedback Systems for a Future Linear Collider University of Oxford: Phil Burrows, Glen White, Simon Jolly, Colin Perry, Gavin Neesom DESY: Nick Walker SLAC: Joe Frisch, Steve Smith, Thomas
More informationCOUPLER 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,
More informationUsing a TE011 Cavity to Measure the Magnetic Momentum of a Magnetized Beam. Jiquan Guo
Using a TE011 Cavity to Measure the Magnetic Momentum of a Magnetized Beam Jiquan Guo Acknowledgements This work is a part of JLab LDRD Generation and Characterization of Magnetized Bunched Electron Beam
More informationElectromagnetic, Thermal and Structural Analysis of the LUX Photoinjector Cavity using ANSYS. Steve Virostek Lawrence Berkeley National Lab
Electromagnetic, Thermal and Structural Analysis of the LUX Photoinjector Cavity using ANSYS Steve Virostek Lawrence Berkeley National Lab 13 December 2004 Photoinjector Background The proposed LBNL LUX
More informationHOM 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,
More informationNational Severe Storm Laboratory, NOAA Paper ID:
Dual-Polarized Radiating Elements Based on Electromagnetic Dipole Concept Ridhwan Khalid Mirza 1, Yan (Rockee) Zhang 1, Dusan Zrnic 2 and Richard Doviak 2 1 Intelligent Aerospace Radar Team, Advanced Radar
More informationSub-ps (and sub-micrometer) developments at ELETTRA
Sub-ps (and sub-micrometer) developments at ELETTRA Mario Ferianis SINCROTRONE TRIESTE, Italy The ELETTRA laboratory ELETTRA is a 3 rd generation synchrotron light source in Trieste (I) since 1993 up to
More informationA Prototype Wire Position Monitoring System
LCLS-TN-05-27 A Prototype Wire Position Monitoring System Wei Wang and Zachary Wolf Metrology Department, SLAC 1. INTRODUCTION ¹ The Wire Position Monitoring System (WPM) will track changes in the transverse
More informationBeam 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
More informationPUBLICATION. HOM electronics and code to probe beam centring on 3.9 GHz cavities
EuCARD-REP-2014-010 European Coordination for Accelerator Research and Development PUBLICATION HOM electronics and code to probe beam centring on 3.9 GHz cavities Zhang, P (DESY) 19 June 2014 The research
More informationtwo pairs of dipole steering windings that t inside the quadrupole yoke an RF beam position monitor (BPM) consisting of a pill box RF cavity,
Chapter 6 Quadrupole Package The quadrupole package is shown in Fig. 6.1. It consists of a superferric quadrupole doublet powered in series enclosed in a stainless steel vessel and cooled by 4 K LHe; two
More informationThe Next Linear Collider Test Accelerator s RF Pulse Compression and Transmission Systems
SLAC-PUB-7247 February 1999 The Next Linear Collider Test Accelerator s RF Pulse Compression and Transmission Systems S. G. Tantawi et al. Presented at the 5th European Particle Accelerator Conference
More informationFAST 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,
More informationEffect of the impedance of a bicone switch on the focal impulse amplitude and beam width
EM Implosion Memos Memo 38 February 2010 Effect of the impedance of a bicone switch on the focal impulse amplitude and beam width Prashanth Kumar, Serhat Altunc, Carl E. Baum, Christos G. Christodoulou
More informationModel C1517J5003AHF. Ultra Low Profile db, 90 Hybrid Coupler
Model C57J53AHF Ultra Low Profile 85 3 db, 9 Hybrid Coupler Description The C57J53AHF is a low cost, low profile sub-miniature high performance 3 db coupler in an easy to use surface mount package. The
More informationX-band Accelerator Structures R&D at SLAC
X-band Accelerator Structures R&D at SLAC Juwen Wang SLAC/LLNL Discussion March 5, 2011 Outline 1. Introduction Brief history Achievements 2. Basics of X-Band Accelerator Structures Design Principle and
More informationMAX 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
More informationRF 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.
More informationStability 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
More informationRoom 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
More informationTHE ORION PHOTOINJECTOR: STATUS and RESULTS
THE ORION PHOTOINJECTOR: STATUS and RESULTS Dennis T. Palmer SLAC / ARDB ICFA Sardinia 4 July 2002 1. Introduction 2. Beam Dynamics Simulations 3. Photoinjector 1. RF Gun 2. Solenoidal Magnet 3. Diagnostics
More informationNew 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
More informationBioimaging of cells and tissues using accelerator-based sources
Analytical and Bioanalytical Chemistry Electronic Supplementary Material Bioimaging of cells and tissues using accelerator-based sources Cyril Petibois, Mariangela Cestelli Guidi Main features of Free
More informationLHC 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
More informationOverview of ERL Projects: SRF Issues and Challenges. Matthias Liepe Cornell University
Overview of ERL Projects: SRF Issues and Challenges Matthias Liepe Cornell University Overview of ERL projects: SRF issues and challenges Slide 1 Outline Introduction: SRF for ERLs What makes it special
More informationNormal-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
More informationTransverse Wakefields and Alignment of the LCLS-II Kicker and Septum Magnets
Transverse Wakefields and Alignment of the LCLS-II Kicker and Septum Magnets LCLS-II TN-16-13 12/12/2016 P. Emma, J. Amann,K. Bane, Y. Nosochkov, M. Woodley December 12, 2016 LCLSII-TN-XXXX 1 Introduction
More informationProjects in microwave theory 2009
Electrical and information technology Projects in microwave theory 2009 Write a short report on the project that includes a short abstract, an introduction, a theory section, a section on the results and
More informationCERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH DESIGN OF PHASE FEED FORWARD SYSTEM IN CTF3 AND PERFORMANCE OF FAST BEAM PHASE MONITORS
CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CLIC Note 1007 DESIGN OF PHASE FEED FORWARD SYSTEM IN CTF3 AND PERFORMANCE OF FAST BEAM PHASE MONITORS P.K. Skowro nski, A. Andersson (CERN, Geneva), A.
More informationUNIVERSITI MALAYSIA PERLIS
UNIVERSITI MALAYSIA PERLIS SCHOOL OF COMPUTER & COMMUNICATIONS ENGINEERING EKT 341 LABORATORY MODULE LAB 2 Antenna Characteristic 1 Measurement of Radiation Pattern, Gain, VSWR, input impedance and reflection
More informationL-BAND COPLANAR SLOT LOOP ANTENNA FOR INET APPLICATIONS
L-BAND COPLANAR SLOT LOOP ANTENNA FOR INET APPLICATIONS Jeyasingh Nithianandam Electrical and Computer Engineering Department Morgan State University, 500 Perring Parkway, Baltimore, Maryland 5 ABSTRACT
More informationShintake Monitor Nanometer Beam Size Measurement and Beam Tuning
Shintake Monitor Nanometer Beam Size Measurement and Beam Tuning Technology and Instrumentation in Particle Physics 2011 Chicago, June 11 Jacqueline Yan, M.Oroku, Y. Yamaguchi T. Yamanaka, Y. Kamiya, T.
More informationWhat s going on? FLASH Seminar Many People s work presented by D.Nölle, MDI,
; FLASH What s going on? Report on Diagnostic Activities at FLASH FLASH Seminar 11.11.08 Many People s work presented by D.Nölle, MDI, 9-2579 1 Topics FLASH BPMs Revision of the Stripline BPM Electronics
More informationBeam Arrival Time Monitors. Josef Frisch, IBIC Sept. 15, 2015
Beam Arrival Time Monitors Josef Frisch, IBIC Sept. 15, 2015 Arrival Time Monitors Timing is only meaningful relative to some reference, and in general what matters is the relative timing of two different
More informationExperience with Insertion Device Photon Beam Position Monitors at the APS
Experience with Insertion Device Photon Beam Position Monitors at the APS 27.6 meters (The APS has forty sectors - 1104 meters total circumference) Beam Position Monitors and Magnets in One Sector 18m
More informationNovel Broadband and Multi-band Antennas for Satellite and Wireless Applications
Novel Broadband and Multi-band Antennas for Satellite and Wireless Applications The objective of our research is to develop novel antenna structures for broadband and/or multi-band satellite and wireless
More informationThermionic 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
More informationEvaluation of HOM Coupler Probe Heating by HFSS Simulation
G. Wu, H. Wang, R. A. Rimmer, C. E. Reece Abstract: Three different tip geometries in a HOM coupler on a CEBAF Upgrade Low Loss cavity have been evaluated by HFSS simulation to understand the tip surface
More informationAn RF Bunch Length Monitor
SLAC-PUB-7456 May 1997 An RF Bunch Length Monitor for the SLC Final Focus* F Zimmermann, G Yocky, D Whittum, M Seidel, P Raimondi, CK Ng, D McCormick, K Bane Stanford Linear Accelerator Center Stanford
More informationAdvanced Photon Source Monopulse rf Beam Position Monitor Front-End Upgrade*
Advanced Phon Source Monopulse rf Beam Position Monir Front-End Upgrade* Robert M. Lill and Glenn A. Decker Advanced Phon Source, Argonne National Laborary 9700 South Cass Avenue, Argonne, Illinois 60439
More information