Multiplexer System for the SPEAR3 Booster BPM Upgrade

Journal Article · 14 September 2021 · Proceedings of the International Beam Instrumentation Conference (IBIC)

DOI: https://doi.org/10.18429/JACoW-IBIC2020-TUPP09 · OSTI ID:1820181

Toufexis, Filippos ^[1]; Campana, L. ^[2]; Boussina, P. ^[1]; Sebek, J. J. ^[1]; Corbett, J. ^[1]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Sapienza Univ. di Roma, Rome (Italy)

BPM measurements in booster synchrotrons are often only critical during accelerator commissioning or when a problem occurs. As a result, many facilities do not make large investments in booster BPM signal processors; they either have very few BPMs and/or use older generation processors. The SPEAR3 booster BPM processor system, for instance, has operated since 1990 with commercial multiplexers to switch between BPM button signals into a single dated analog BPM processor that was developed at SLAC*. This system has reached its end-of-life so we are in the process of upgrading to modern multiplexers that feed a pair of turn-by-turn Libera SPARK-ERXR processors. This low-cost solution gives us the ability to arbitrarily multiplex between BPM signals during the energy ramp with modern BPM processors. The system can either measure 2 BPMs turn-by-turn in parallel during the entire energy ramp, or sequentially measure all BPMs (2 at a time) at different time slices within the ramp. Here we show measurements of the MiniCircuits switch we chose as well as our architecture for the upgrade.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1820181
• Report Number(s): SLAC-PUB-17565; TRN: US2214228
• Journal Information: Proceedings of the International Beam Instrumentation Conference (IBIC), Vol. 2; Conference: 9th International Beam Instrumentation Conference (IBIC2020), Santos, Brazil, 14-18 Sept. 2020; ISSN 2673-5350
• Publisher: JACoW PublishingCopyright Statement
• Country of Publication: United States
• Language: English