1 / 21

Status of BEPCII Timing System

Status of BEPCII Timing System. Presented by Ge Lei IMAC 2006. Progress. Ordered hardware have all arrived and been tested. Besides, we have developed some hardware to fit our special requirements.

yank
Télécharger la présentation

Status of BEPCII Timing System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of BEPCII Timing System Presented by Ge Lei IMAC 2006

  2. Progress • Ordered hardware have all arrived and been tested. Besides, we have developed some hardware to fit our special requirements. • Prototype of trigging E-Gun, linac modulators, injecting kickers have been set up based on EVG/EVR series 200 modules and TD4V. Software has been developed. • Timing system has been installed in BEPCII Linac accelerator, in real operation, working well. • Jitters have been measured, in both office and Linac control site. • Challenges faced and solved: mis-trigs, missed trigs • Challenges facing: bucket selection, work with BCM, etc.

  3. West North e+ RF station e+ kicker To beam instrumentation station EVRs to trig modulators EVRs to trig modulators OM3 optic fiber OM3 optic fiber e gun transmission line 250m PLL transmission line E4434B, 499.8MHz EVG-200 Timing station Ring control room trigger spectrometer E4428C In linac control room OM3 multimode optic fiber EVR-200, Gun-TX in room 102 e- kicker e- RF station Ring Linac Layout of BEPCII Timing System

  4. BEPCIItiming sequence

  5. Timing prototype based on E4434B,MVME5100,EVG-200, EVR-RF-200, EVR-200, TTB, FOUT7, GUNTX, GUNRX, TTL-NIM transition board, TD4V

  6. Linac timing works • Hardware developed • 220volts to 3.8volts transmitter for EVG, • 12v output transition board for SolidAmplifier, • 18 sets of optical transimitting/receiving boards, for gun power supply, positron source, and 16 modulators • Gun-Rx module changed to generate NIM outputs directly, • Software developed, • Debug register settings for EVG-, EVR-200, TD4v, Gun-Tx • IOC database and OPI to test EVG-200,EVR-200,TD4v,Gun-Tx • EVG/EVR FPGA upgraded, tune EVRs • IOC database and OPI for linac timing operating, including BI • Applications to record arriving time of trigs in order to analyze the missed trigs • Functions added to drivers to set EVG/EVR registers to work at 499.8MHz/4, /5, /10

  7. Linac timing works • The fibre optical cables were installed in linac acce. site in Jan. • On Feb.15,2006, we began moving our timing devices from office to linac control site, • install modules, connect cables, settle network, test applications, measure jitter • on Mar.1, we went to tunnel and installed GUN-RX in the high voltage deck, successfully set the trigs to e-gun. • Work whenever linac people need us for the linac commissioning, to adjust timing delay settings of trigs to e-gun, solid amplifier, PSK, gun power supply, positron source, 16 modulators.

  8. Linac Timing

  9. Timing devices in linac control room

  10. Timing devices in linac control room, backplane of the linac main timing crate

  11. Gun-Tx, Gun-Rx, isolation transformer, regulated power supply

  12. Linac timing works • Problem suffered: (hope our experience in linac can do some helps to storage ring) • Unexpected power down, • Unexpected network down • EMI • Challenge faced (solutions found) • Mis-trigs • Missed trigs • Improving graphical user interface • Phase shift due to temperature changing has been measured in March

  13. Linac control panel, popped up when operators login

  14. Linac timing control for positron source, e-gun power supply, PSK, solid amplifier, and 16 modulators.

  15. E-Gun timing control

  16. Jitter Measurement Use histogram and Jitter3AnalyserEssential seperately, to measure • Pk-Pk • StdDev: Standard Deviation：

  17. Jitter Measurement results Signal source: Agilent E4434B Measure Equipment: Tektronics TDS7254B oscillator Result: E-Gun trig to 499.8MHz signal source, standard deviation of jitter • at office: 36ps • at linac control site: 47ps The above data include the jitter of power divider, event generator, fanout module, event receiver, gun trig transmitter, gun trig receiver, TTL-NIM transition board and all cables.

  18. Jitter measured using Jitter3AnalyserEssential , output of TTL-NIM transition board to 499.8MHz from signal source, at office

  19. Phase detector designed by Zhenhan Ma, almost done. Resolution is less than 1 degree in scope from -180 degrees to 180 degrees of 1MHz signals

  20. Acknowledgement Many thanks to colleagues and leaders in Acce.Center, especially in Linac system and Beam Instrumentation group. Many thanks to timing people in SLS, Diamond Light Source, SSRF and MRF. Many thanks to the collaboration in timing task of BEPCII: • Preliminary design: W.Gao • Interface discussing and Hardware ordering: W.Gao, G.Xu, G.Lei • Prototype development, jitter measurement and analysis: G.Lei, G.Xu • Hardware development: L.Wang, G.Li, Q.Le, W.Gao, G.Xu • Software development: G.Lei, G.Xu • Linac timing installation, debugging: G.Lei, G.Xu, W.Gao, Q.Le, Q.Ye, L.Wang • Solaris, EPICS and vxWorks system support: Z.Zhao, C.Wang • Phase detector: Z.Ma

  21. Thank you

More Related