Operation experience of p-Carbon polarimeter in RHIC

Conference · Sun May 03 00:00:00 EDT 2015

OSTI ID:1183852

Huang, H. ^[1]; Alekseev, I. G. ^[2]; Aschenauer, E. C. ^[1]; Atoian, G. ^[1]; Bazilevsky, A. ^[1]; Eyser, O. ^[1]; Kalinkin, D. ^[1]; Kewisch, J. ^[1]; Makdisi, Y. ^[1]; Nemesure, S. ^[1]; Poblaguev, A. ^[1]; Schmidke, W. B. ^[1]; Svirida, D. ^[2]; Steski, D. ^[1]; Webb, G. ^[1]; Zelenski, A. ^[1]; Tip, K. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)
2. Inst. of Theoretical and Experimental Physics (ITEP), Moscow (Russian Federation)

The spin physics program in Relativistic Heavy Ion Collider (RHIC) requires fast polarimeter to monitor the polarization evolution on the ramp and during stores. Over past decade, the polarimeter has evolved greatly to improve its performance. These include dual chamber design, monitoring camera, Si detector selection (and orientation), target quality control, and target frame modification. The preamp boards have been modified to deal with the high rate problem, too. The ultra thin carbon target lifetime is a concern. Simulations have been carried out on the target interaction with beam. Modification has also been done on the frame design. Extra caution has been put on RF shielding to deal with the pickup noises from the nearby stochastic cooling kickers. This paper summarizes the recent operation performance of this delicate device.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: SC00112704
• OSTI ID: 1183852
• Report Number(s): BNL-107425-2015-CP; R&D Project: KBCH139; 18031; KB0202011; TRN: US1500219
• Resource Relation: Conference: 6th International Particle Accelerator Conference (IPAC’15), Richmond, VA (United States), 3-8 May 2015
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BROOKHAVEN RHIC
CARBON 12 TARGET
PROTON BEAMS
POLARIMETERS
OPERATION
DESIGN
MODIFICATIONS
MONITORS
PERFORMANCE
CAMERAS
TIME DEPENDENCE
INTERACTIONS
NOISE
SPIN ORIENTATION
SIMULATION
RELATIVISTIC HEAVY ION COLLIDER