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Title: Response function stability of single crystal diamond detectors to 14 MeV neutrons

Detectors based on single crystal synthetic diamond show promise as neutron spectrometers for the ITER project. In this work, the stability of the response function of two diamond detectors was tested at the Physikalisch-Technische Bundesanstalt (PTB) accelerator using a 14 MeV neutron field and a method of time-resolved fluence monitoring. In addition, measurements at the PTB ion-microbeam were made to investigate the charge collection properties of the detectors in more detail. The {sup 12}C(n,α){sup 9}Be peak response of one of the detectors was found to be stable within 1% after irradiation with a neutron fluence of 8 × 10{sup 9} cm{sup −2}. The absolute value of the peak response of this detector was determined as 8.65(26) × 10{sup −5} cm{sup 2}.
Authors:
;  [1]
  1. Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig (Germany)
Publication Date:
OSTI Identifier:
22308625
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATORS; CARBON 12 TARGET; CHARGE COLLECTION; DIAMONDS; ITER TOKAMAK; MEV RANGE; MONOCRYSTALS; NEUTRON DETECTORS; NEUTRON FLUENCE; NEUTRON REACTIONS; NEUTRON SPECTROMETERS; RESPONSE FUNCTIONS; TIME RESOLUTION