A Method for Real Time Monitoring of Charged Particle Beam Profile and Fluence

Detectors planned for use at the Large Hadron Collider will operate in a radiation field produced by beam collisions. To predict the radiation damage to the components of the detectors, prototype devices are irradiated at test beam facilities that reproduce the radiation conditions expected. The pro...

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Bibliographic Details
Published in:arXiv.org 2013-09
Main Authors: Prabhakar Palni, Hoeferkamp, Martin, Taylor, Aaron, Vora, Sandip, McDuff, Haley, Gu, Qufei, Seidel, Sally
Format: Article
Language:English
Subjects:
Charged particles
Detectors
Fluence
Image analysis
Large Hadron Collider
Metal foils
Particle beams
Proton beams
Radiation damage
Real time
Semiconductor diodes
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Summary:Detectors planned for use at the Large Hadron Collider will operate in a radiation field produced by beam collisions. To predict the radiation damage to the components of the detectors, prototype devices are irradiated at test beam facilities that reproduce the radiation conditions expected. The profile of the test beam and the fluence applied per unit time must be known. Techniques such as thin metal foil activation and radiographic image analysis have been used to measure these; however, some of these techniques do not operate in real time, have low sensitivity, or have large uncertainties. We have developed a technique to monitor in real time the beam profile and fluence using an array of \(p-i-n\) semiconductor diodes whose forward voltage is linear with fluence over the fluence regime relevant to, for example, tracking in the LHC Upgrade era. We have demonstrated this technique in the 800 MeV proton beam at the LANSCE facility of Los Alamos National Laboratory.
ISSN:2331-8422
DOI:10.48550/arxiv.1310.0047