TY - JOUR
T1 - Performance of silicon detectors in polarized proton-proton elastic scattering at RHIC
AU - Plyku, Donika
PY - 2011
Y1 - 2011
N2 - The STAR experiment at RHIC is equipped with insertion devices (Roman Pots) that allow the detectors to be moved close to the beam, in order to measure protons at small scattering angles. This setup, together with the unique capability of RHIC to collide spin-polarized proton beams, allows STAR to study both unpolarized and spin-dependent proton-proton (pp) elastic scattering process. With silicon strip detectors installed in Roman Pots, pp elastic scattering is accessible in the Coulomb Nuclear Interference (CNI) region, where a measurable single spin asymmetry arises. By using a dedicated run with special beam optics during the RHIC 2009 data taking period, the collaboration was able to collect more than 30 M elastic triggers with transversely polarized proton beams at √s = 200 GeV and in the four-momentum transfer squared (t) range of 0.005 GeV2/c2 ≤ -t ≤ 0.035 GeV 2/c2. In here we describe the experimental setup and performance during the last data taking period, with a specific focus on alignment and efficiency of the silicon detectors.
AB - The STAR experiment at RHIC is equipped with insertion devices (Roman Pots) that allow the detectors to be moved close to the beam, in order to measure protons at small scattering angles. This setup, together with the unique capability of RHIC to collide spin-polarized proton beams, allows STAR to study both unpolarized and spin-dependent proton-proton (pp) elastic scattering process. With silicon strip detectors installed in Roman Pots, pp elastic scattering is accessible in the Coulomb Nuclear Interference (CNI) region, where a measurable single spin asymmetry arises. By using a dedicated run with special beam optics during the RHIC 2009 data taking period, the collaboration was able to collect more than 30 M elastic triggers with transversely polarized proton beams at √s = 200 GeV and in the four-momentum transfer squared (t) range of 0.005 GeV2/c2 ≤ -t ≤ 0.035 GeV 2/c2. In here we describe the experimental setup and performance during the last data taking period, with a specific focus on alignment and efficiency of the silicon detectors.
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U2 - 10.1088/1742-6596/295/1/012129
DO - 10.1088/1742-6596/295/1/012129
M3 - Article
AN - SCOPUS:79959275441
SN - 1742-6588
VL - 295
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012129
ER -