2011 Particle Accelerator Conference - List of Authors (Bogdanov, A.)

Paper	Title	Page
MOP190	Precision, Absolute Proton Beam Polarization Measurements at 200 MeV Beam	444
	G. Atoian, A. Zelenski BNL, Upton, Long Island, New York, USA A. Bogdanov, M.F. Runtso MEPhI, Moscow, Russia E.J. Stephenson IUCF, Bloomington, Indiana, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. A new polarimeter for absolute proton beam polarization measurements at 200 MeV to accuracy better than ±0.5% has been developed as a part of the RHIC polarized source upgrade. The polarimeter is based on the elastic proton-carbon scattering at 16.2 degree angle, where the analyzing power is close to 100% and was measured with high accuracy. The elastically and in-elastically scattered protons are clearly identified by the difference in the propagation through variable copper absorber and energy deposition of the protons in the detectors. The 16.2 degree elastic scattering polarimeter was used for calibration of a high rate inclusive 12 degree polarimeter for the on-line polarization tuning and monitoring. This technique can be used for accurate polarization measurements in energy range of at least 160-250 MeV.

Paper

Title

Page

Precision, Absolute Proton Beam Polarization Measurements at 200 MeV Beam

444

G. Atoian, A. Zelenski
BNL, Upton, Long Island, New York, USA
A. Bogdanov, M.F. Runtso
MEPhI, Moscow, Russia
E.J. Stephenson
IUCF, Bloomington, Indiana, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
A new polarimeter for absolute proton beam polarization measurements at 200 MeV to accuracy better than ±0.5% has been developed as a part of the RHIC polarized source upgrade. The polarimeter is based on the elastic proton-carbon scattering at 16.2 degree angle, where the analyzing power is close to 100% and was measured with high accuracy. The elastically and in-elastically scattered protons are clearly identified by the difference in the propagation through variable copper absorber and energy deposition of the protons in the detectors. The 16.2 degree elastic scattering polarimeter was used for calibration of a high rate inclusive 12 degree polarimeter for the on-line polarization tuning and monitoring. This technique can be used for accurate polarization measurements in energy range of at least 160-250 MeV.