RHIC beam instrumentation

RHIC instrumentation systems must accurately characterize diverse beams of up to 110 bunches in each of the two collider rings, ranging from 1011 protons/bunch at 250 GeV to 109 Au+79 ions/bunch at 100 GeV/nucleon, as well as lower-intensity commissioning and pilot bunches. The collider instrumentation includes: 667 beam position monitor (BPM) channels, 363 beam loss monitor (BLM) channels, wall current monitors, DC current transformers, ionization profile monitors, tune measurement devices, and resonant Schottky monitors. Collider instrumentation is also used in the AGS-to-RHIC transfer line, including 52 BPM channels, 56 BLM channels, 5 fast integrating current transformers, and 12 video beam profile monitors (RHIC Design Manual, April 1998; Proceedings of the' 98 Beam Instrumentation Workshop, 1998)