The RHIC p-Carbon CNI Polarimeter Upgrade For The Beam Polarization And Intensity Measurements

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215748· OSTI ID:21344434

Zelenski, A; Bazilevski, A; Bunce, G; Gill, R; Huang, H; Mahler, G; Makdisi, Y; Morozov, B; Nemesure, S; Russo, T; Steski, D; Sivertz, M ^[1]

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1. Brookhaven National Laboratory, Upton, NY 11973 US (United States)

Proton polarization measurements in the AGS and RHIC (Relativistic Heavy Ion Collider at the beam energies 24-250 GeV) are based on proton-carbon and proton-proton elastic scattering in the Coulomb Nuclear Interference (CNI) region. Polarimeter operation in the scanning mode also gives polarization profile and beam intensity profile (beam emittance) measurements. Bunch by bunch emittance measurement is a very powerful tool for machine setup. Presently, the polarization and beam intensity profile measurements (in both vertical and horizontal planes) are restricted by the long target switching time and possible target destruction during this complicated motion. The RHIC polarimeters were operated near the limit of the counting rate for present silicon strip detectors. The ongoing polarimeter upgrade for the 2009 run will address all these problems. The upgrade should allow significant reduction of the polarization measurement errors by making feasible the complete polarization measurements, which includes polarization profiles in both the horizontal and vertical planes.

• OSTI ID: 21344434
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: SPIN 2008: 18. International Spin Physics Symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215748; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
43 PARTICLE ACCELERATORS
BEAM EMITTANCE
BEAM MONITORING
BROOKHAVEN AGS
BROOKHAVEN RHIC
CORRECTIONS
COULOMB FIELD
COUNTING RATES
ELASTIC SCATTERING
GEV RANGE
INTERFERENCE
OPERATION
PHOTONS
POLARIMETERS
POLARIZATION
POLARIZED BEAMS
PROTONS
RELATIVISTIC RANGE
SI MICROSTRIP DETECTORS
ACCELERATORS
BARYONS
BEAMS
BOSONS
CYCLIC ACCELERATORS
ELECTRIC FIELDS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HEAVY ION ACCELERATORS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MONITORING
NUCLEONS
RADIATION DETECTORS
SCATTERING
SEMICONDUCTOR DETECTORS
SI SEMICONDUCTOR DETECTORS
STORAGE RINGS
SYNCHROTRONS