REGULATION LOOPS AND RF CONTROL SYSTEM FOR SOLEIL

Transcription

1 REGULATION LOOPS AND RF CONTROL SYSTEM FOR SOLEIL 8 th ESLS RF meetng Daresbury, September 29 th -30 th, 2004 M. DIOP

2 BOOSTER 35 KW AMPLIFIER 8-way spltter 2.5 kw ampl 2.5kW coupler 8 x 330 W 2-way spltter 2x20 kw combner 35 kw 40 kw coupler 20 kw 35 kw AMPLIFIER (18 x 8) + 2 = 146 modules 146 modules of 330 W 2.5 kw ampl

3 AMPLIFIER SUPERVISION Mcrocontroller and multplexng system ON/OFF DC/DC Converters 18 x Modules 18 x Modules 2 x Modules PLC Pn Pout RF swtch Bar 9 CPCI Drectonal Coupler Drectonal Coupler 240 x 128 Dots 2 Detectors Inputs Multplexng 40 n / 1 out 2 Detectors Output 2 Detectors Multplexng 40 n / 1 out Inputs 2 Detectors Output Inputs Multplexng 4 n / 1 out Output RS232 Swtch RF µcontroller Semens C bts 256KB Flash 64 kb SRAM In/Out LCD ADC Converters Out cmd Drectonal Coupler Drectonal Coupler Bar 1 Bar 8 Bar 7 Bar 6 Bar 5 Bar 4 Bar 3 Bar 2 ADC 9 ADC 8 ADC 7 ADC 6 ADC 5 ADC 4 ADC 3 ADC 2 ADC 1

4 BOOSTER REGULATION LOOPS 3 «slow» loops (frequency, ampltude and phase) Adapted verson of the LURE system

5 REGULATION LOOPS Characterzaton of the regulaton loops Voltage loop transfer functon Frequency loop transfer functon Result: BP = 10 khz for a 200 mv modulaton P = 10 KW Result: BP = 5 Hz for a 50 mv modulaton

6 BOOSTER CONTROL SYSTEM CAVITY AND LLES Water flows, Temperatures, AMPLIFIER An. & dg. I / O I x 2 x 146 modules P, Pr x 16 MULTIPLEXING AI P ref Vacuum PSS Machne ntlk SOLEIL CONTROL «TANGO» Ethernet PLC CPCI RS232 µcontroller Hardwred fast nterlock Power supples off Pn Pout to amplfer LLES: Low Level Electronc systems RF swtch

7 STORAGE RING AMPLIFIER 190 kw Amplfer (1 per cavty) 4 x 50 kw 726 modules of 315 W

8 50 KW UNIT PRINCIPLE 10-way spltter 2-way spltter 50 kw UNIT x 4 for one 190 kw ampl 4 x [10 + (20 x 8)] + 2 = «stand-n» = 726 modules

9 AMPLIFIER SUPERVISION Mcrocontroller and multplexng system ON/OFF DC/DC Converters 18 x Modules 18 x Modules PLC Pn Pout STORAGE RING AMPLIFIER CONTROL CPCI RF swtch LCD Screen + Touch Screen 240 x 128 Dots Drectonal Coupler 2 Detectors Inputs Multplexng 40 n / 1 out Output Drectonal Coupler 2 Detectors Multplexng 40 n / 1 out Inputs Output RS232 ADC Converters Swtch RF In/Out LCD µcontroller Semens C bts 256KB Flash 64 kb SRAM Out cmd 2 Detectors 2 Detectors Output Output Output Output 50 KW Multplexng 50 KW Multplexng 50 KW Multplexng 50 KW Multplexng Inputs Inputs Inputs Inputs Drectonal Coupler Drectonal Coupler Bar 9 Bar 8 Bar 7 Bar 6 Bar 5 Bar 4 Bar 3 Bar 2 Bar 10 Bar 9 Bar 8 Bar 7 Bar 6 Bar 5 Bar 4 Bar 3 Bar 2 Bar 1 Bar 1 Bar 10

10 ROBINSON STABILITY STORAGE RING : 4 Superconductng 352 MHz cavtes, housed per par n 2 cryomodules Very hgh beam loadng (Y sc ~ 10 Y nc ) lmt of Robnson nstablty Y=I b /I 0 (zero margn) SC NC - (tunng angle) Robnson stablty dagram (matched condton, Pref = 0 at max I b )

11 REGULATION LOOPS Cure : drect RF feedback loop RF sgnal comng from the cavty pck-up re-njected nto the power ampflfer to reduce the mpedance seen by the beam G + V set - I g I b V go + - Cavty Z c V c

12 REGULATION LOOPS STORAGE RING PHASE 1: Booster - lke «slow» frequency, ampltude and phase loops + drect RF feedback FEEDBACK

13 REGULATION LOOPS Gan lmted by drect RF feedback delay kw AMPLIFIER Optmzaton: comb-flter n parallel Cavty e - RF DIRECT COMB-FILTER Ths flter enables us to adjust the feedback phase at sdeband frequences Possblty to reduce selectvely the cavty mpedance at the synchrotron sdebands of the revoluton harmoncs to cope wth longtudnal coupled-bunch nstabltes

14 REGULATION LOOPS STORAGE RING PHASE 2: Desgn of fast dgtal ampltude and phase loops (collaboraton wth CEA) Fast, Modular, Relable, Flexble

15 STORAGE RING CONTROL SYSTEM CAVITY AND LLES Water flows, Temperatures, AMPLIFIER SOLEIL CONTROL «TANGO» Ethernet An. & dg. I / O PLC CPCI RS232 I x 2 x 680 modules P, Pr x 80 MULTIPLEXING AI µcontroller P ref Hardwred fast nterlock Vacuum PSS Machne ntlk PLC Cryo Power supples off Pn Pout to amplfer RF swtch LLES: Low Level Electronc systems

16 d g t a l d g t a l 3Com d g d t g a l t a l d g t a l 3Com d g t a l 3Com d g t a l d g t a l 3Com SUPERVISION PLC structure TANGO ETHERNET CPU 315 BOOSTER CPU 315 CAVITY 1 STORAGE RING CPU 315 CAVITY 2 STORAGE RING CPU 315 CAVITY 3 STORAGE RING CPU 315 CAVITY 4 STORAGE RING MPI Dp/Dp Dp/Dp footbrdge Dp/Dp Dp/Dp footbrdge PROFIBUS DP PROFIBUS DP PROFIBUS DP PROFIBUS DP ET200 CAVITY 1 ET200 CAVITY 2 ET200 CAVITY 3 ET200 CAVITY 4 PLC EXT(transfo 1 and 2) PLC EXT(transfo 3 and 4) SIEMENS S7-300 PLC EXT(Cryothermostat) (Cryomodule)

17 CONCLUSION Regulaton loops BOOSTER: Use of «slow» analogc ampltude, phase and frequency loops STORAGE RING: Phase 1: booster lke system + drect RF feedback loop Phase 2: replacement of the analogc system wth a dgtal one usng fast ampltude and phase loops RF control systems CPCI => RF dagnostcs PLC => cavtes and amplfer nterlocks Hardwred fast nterlocks Dedcated PLC for cryo-plant (storage rng)