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A fast profile monitor with scintillating fiber hodoscopes for high-intensity photon beams
- Source :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 811:124-132
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A fast beam-profile monitor has been developed for high-energy photon beamlines at the Research Center for Electron Photon Science, Tohoku University. The position of the photon converted into an electron–positron pair in a 0.5 mm-thick aluminum plate is measured with two hodoscopes made of scintillating fibers with cross-sections of 3 × 3 mm 2 . Events in which charged particles are produced upstream are rejected with a charge veto plastic scintillator placed in front of the plate, and pair-production events are identified with a trigger plastic scintillator placed behind the plate. The position is determined by a developed logic module with a field-programmable gate array. The dead time for processing an event is 35 ns, and a high data acquisition efficiency ( ~ 100 % ) can be achieved with this monitor for high-intensity photon beams corresponding to 20 MHz tagging signals.
- Subjects :
- Physics
Nuclear and High Energy Physics
Photon
Physics::Instrumentation and Detectors
010308 nuclear & particles physics
business.industry
Electron
Dead time
Scintillator
01 natural sciences
Charged particle
Data acquisition
Optics
Gate array
0103 physical sciences
Upstream (networking)
010306 general physics
business
Instrumentation
Subjects
Details
- ISSN :
- 01689002
- Volume :
- 811
- Database :
- OpenAIRE
- Journal :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Accession number :
- edsair.doi...........065515abf2e1e86d513996f27403943c