Timing and rf synchronization for filling PEP/SPEAR with the SLC Damping Rings

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An innovative timing and rf synchronization system has been built and commissioned which allows the direct injection of 1 mm sigma/sub z/ e/sup +/ or e/sup /minus// bunches from the SLC Damping Rings (..nu../sub rf/ = 714 MHz) into the storage rings PEP (..nu../sub rf/ = 353 MHz) and SPEAR (..nu../sub rf/ = 358 MHz). The required relative stability of these oscillators is 10/sup /minus/9/ since the beams may be stored in each damping ring (DR) for up to 0.2 sec., during which no timing correction is made, and must be delivered within a 0.5 nsec window. This stability has ... continued below

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Pages: 4

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Ronan, M.T.; Lambert, D.J.; Lee, K.L.; Bernstein, D.R.; Corredoura, P.; Jobe, R.K. et al. March 1, 1989.

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An innovative timing and rf synchronization system has been built and commissioned which allows the direct injection of 1 mm sigma/sub z/ e/sup +/ or e/sup /minus// bunches from the SLC Damping Rings (..nu../sub rf/ = 714 MHz) into the storage rings PEP (..nu../sub rf/ = 353 MHz) and SPEAR (..nu../sub rf/ = 358 MHz). The required relative stability of these oscillators is 10/sup /minus/9/ since the beams may be stored in each damping ring (DR) for up to 0.2 sec., during which no timing correction is made, and must be delivered within a 0.5 nsec window. This stability has been obtained by phase-locking the storage ring rf to the LINAC-DR master oscillator. In order to obtain bunched beams for acceleration in the LINAC 10.5 cm rf structure while maintaining the storage ring timing requirements, the Subharmonic Buncher and Damping Ring rf are phase-shifted using GaAs digital circuitry. This paper describes the phase-locked loops, the rf distribution system, the S-band resettable dividers and the interpulse timing system components used in this project. 4 refs., 4 figs., 1 tab.

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Pages: 4

Notes

NTIS, PC A02/MF A01 - OSTI; 1.

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  • 13. particle accelerator conference, Chicago, IL, USA, 20 Mar 1989

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  • Other: DE89012277
  • Report No.: SLAC-PUB-4906
  • Report No.: LBL-26809
  • Report No.: CONF-890335-162
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 6250947
  • Archival Resource Key: ark:/67531/metadc1109991

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  • March 1, 1989

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  • Feb. 22, 2018, 7:45 p.m.

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  • May 29, 2018, 1:02 p.m.

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Ronan, M.T.; Lambert, D.J.; Lee, K.L.; Bernstein, D.R.; Corredoura, P.; Jobe, R.K. et al. Timing and rf synchronization for filling PEP/SPEAR with the SLC Damping Rings, article, March 1, 1989; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc1109991/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.