Journal article
Boron and thermal neutron interactions on borosilica window photomultiplier tubes
Journal of instrumentation, Vol.5(8), pp.P08005-P08005
08/01/2010
DOI: 10.1088/1748-0221/5/08/P08005
Abstract
The borosilica, a very common PMT window and envelope material, contains 5% Boron (1% (10)B). The high cross section for (10)B capturing thermal neutrons (3980 barn), is a concern for LHC experiments using borosilica window PMTs. This study investigates the rate and the size of the signals generated by thermal neutron boron interaction in borosilica window PMTs; Hamamatsu R7525-HA and R7600U-200-M4. Although virtually all of the thermal neutrons incident on the borosilicate glass are absorbed, probability of generating a PMT signal was measured to be 3x10(-4) and 3x10(-6) for R7525-HA and R7600U-200-M4 PMTs, respectively. For these signals the average pulse size was found to be between 20-30 photoelectrons. We also discuss that four anode PMTs allow the elimination of these events with an offline algorithm.
Details
- Title: Subtitle
- Boron and thermal neutron interactions on borosilica window photomultiplier tubes
- Creators
- U. Akgun - University of IowaB. Bilki - University of IowaP. Debbins - University of IowaJ. Neuhaus - University of IowaE. Norbeck - University of IowaY. Onel - University of IowaL. Sensoy - University of IowaJ. J. Sunderland - University of IowaD. Winn - Bielefeld University
- Resource Type
- Journal article
- Publication Details
- Journal of instrumentation, Vol.5(8), pp.P08005-P08005
- Publisher
- Iop Publishing Ltd
- DOI
- 10.1088/1748-0221/5/08/P08005
- ISSN
- 1748-0221
- eISSN
- 1748-0221
- Number of pages
- 8
- Language
- English
- Date published
- 08/01/2010
- Academic Unit
- Radiology; Physics and Astronomy; Radiation Oncology
- Record Identifier
- 9984312977302771
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