NDLI: LHC beam loss detector design: Simulation and measurements

Content Provider	IEEE Xplore Digital Library
Author	Dehning, B. Effinger, E. Emery, J. Ferioli, G. Holzer, E.B. Kramer, D. Ponce, L. Stockner, M. Zamantzas, C.
Copyright Year	2007
Description	Author affiliation: CERN, Geneva (Dehning, B.; Effinger, E.; Emery, J.; Ferioli, G.; Holzer, E.B.; Kramer, D.; Ponce, L.; Stockner, M.; Zamantzas, C.)
Abstract	The beam loss monitoring (BLM) system is integrated in the active equipment protection system of the LHC. It determines the number of particles lost from the primary hadron beam by measuring the radiation field of the shower particles outside of the vacuum chamber. The LHC BLM system will use ionization chambers as its standard detectors but in the areas where very high dose rates are expected, the secondary emission monitor (SEM) chambers will be additionally employed because of their high linearity, low sensitivity and fast response. The sensitivity of the SEM was modeled in Geant4 via the Photo-Absorption Ionization module together with custom parameterization of the very low energy secondary electron production. The prototypes were calibrated by proton beams. For the calibration of the BLM system the signal response of the ionization chamber is simulated in Geant4 for all relevant particle types and energies (keV to TeV range). The results are validated by comparing the simulations to measurements using protons, neutrons, photons and mixed radiation fields at various energies and intensities.
Starting Page	4198
Ending Page	4200
File Size	268348
Page Count	3
File Format	PDF
ISBN	9781424409167
DOI	10.1109/PAC.2007.4439981
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Large Hadron Collider Loss measurement Particle beam measurements Monitoring Particle beams Ionization chambers Protection Particle measurements Detectors Linearity
Content Type	Text
Resource Type	Article

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