A Prototype Ionization Profile Monitor for RHIC

Technical Report · Mon Mar 17 00:00:00 EST 1997

DOI:https://doi.org/10.2172/1119235· OSTI ID:1119235

Connolly, R. ^[1]; Cameron, P. ^[1]; Ryan, W. ^[1]; Shea, T. ^[1]; Sikora, R. ^[1]; Tsoupas, N. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)

The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Lab will accelerate and store beams of ions ranging from protons to gold nuclei. Transverse beam profiles will be obtained by measuring the distribution of free electrons formed by beam ionization of the residual gas. The electrons are swept from the beamline by a transverse electric field, amplified by a microchannel plate (MCP), and collected on a circuit board with strip anodes oriented parallel to the beam axis. A uniform magnetic field,parallel to the sweep electric field, counters the defocusing effects of space charge and recoil momentum. A single-plane prototype ionization profile montor (IPM) was installed near the end of the AGS-to-RHIC transfer line (ATR) and tested during the sextant commissioning rung. It measured vertical profiles of single bunches of Au nuclei with intensities of 0.6-1.0 x 10⁸ particles. These profiles are compared to profiles on a fluorescent screen (WF3) located 2m downstream from the IPM. This paper describes the detector and gives results from the beam test.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 1119235
• Report Number(s): BNL-101893-2013-IR
• Country of Publication: United States
• Language: English

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