Gas Electron Multipliers for the Antiproton Decelerator

Details Gas Electron Multipliers for the Antiproton Decelerator Gas Electron Multipliers for the Antiproton Decelerator

2011-05-24

arxiv.org/abs/1105.4771v1

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE, pp.464-467, 23-29 Oct. 2011

Physics

Instrumentation and Detectors

Paper presented at DIPAC 2011, Hamburg

Scientific paper

10.1109/NSSMIC.2011.6153647

The new beam profile measurement for the Antiproton Decelerator (AD) at CERN is based on a single Gas Electron Multiplier (GEM) with a 2D readout structure. This detector is very light (~0.4% X0), and measures horizontal and vertical profiles directly in one plane. This overcomes the problems previously encountered with multi-wire proportional chambers for the same purpose, where beam interactions with the detector severely affect the obtained profiles. A prototype was installed and successfully tested in late 2010, with another five detectors now installed in the ASACUSA and AEGIS beam lines. This paper will provide a detailed description of the detector and discuss the results obtained.

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