Diagnostics development for the PEP-II B factory

Journal Article · Wed Jan 01 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.52316· OSTI ID:526805

Fisher, A S; Alzofon, D; Arnett, D; Bong, E; Daly, E; Gioumousis, A; Kulikov, A; Kurita, N; Langton, J; Reuter, E; Seeman, J T; Wienands, H U; Wright, D ^[1]; Chin, M; Hinkson, J; Hunt, D; Kennedy, K ^[2]

---

1. Stanford Linear Accelerator Center, Stanford University, Post Office Box 4349, Stanford, California 94309 (United States)
2. Lawrence Berkeley National Laboratory, University of California, 1 Cyclotron Road, Berkeley, California 94720 (United States)

PEP-II is a 2.2-km collider with a 2.1-A, 3.1-GeV positron ring 1 m above a 1-A, 9-GeV electron ring; both are designed for a maximum of 3 A. Several diagnostics are now in preparation for commissioning the rings. The beam size and pulse duration are measured using visible synchrotron radiation from arc dipoles. Grazing-incidence, water-cooled mirrors that must withstand up to 200 W/cm extract the light. The sum signal from a set of four pickup buttons, normalized to a DC current transformer{close_quote}s measurement of the ring current, is processed to measure the charge in each bunch. This enables us to fill 1658 of the 3492 buckets per ring to a charge that must be equal within {plus_minus}2{percent}. For diagnostics and machine protection, 100 photomultiplier-based Cherenkov detectors measure the beam-loss distribution. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Stanford Linear Accelerator Center
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 526805
• Report Number(s): CONF-9605173--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 390; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
AMP BEAM CURRENTS
BEAM BUNCHING
BEAM MONITORING
BEAM PROFILES
FOURIER ANALYSIS
GEV RANGE 01-10
PEP STORAGE RINGS
SIGNAL CONDITIONING
SYNCHROTRON RADIATION
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA