Test of a prototype neutron spectrometer based on diamond detectors in a fast reactor

Conference · Wed Jul 01 00:00:00 EDT 2015

DOI:https://doi.org/10.1109/ANIMMA.2015.7465605· OSTI ID:22531425

Osipenko, M.; Ripani, M.; Ricco, G. ^[1]; Caiffi, B. ^[2]; Pompili, F.; Pillon, M.; Angelone, M. ^[3]; Verona-Rinati, G.; Cardarelli, R. ^[4]; Argiro, S. ^[5]

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1. Istituto Nazionale di Fisica Nucleare, Genoa, 16146, (Italy)
2. Universita di Genova, Genoa, 16146, (Italy)
3. ENEA, Frascati, 00044, (Italy)
4. Universita di Roma Tor Vergata, Rome, 00133, (Italy)
5. Universita di Torino and INFN, Turin, 10125, (Italy)

A prototype of neutron spectrometer based on diamond detectors has been developed. This prototype consists of a {sup 6}Li neutron converter sandwiched between two CVD diamond crystals. The radiation hardness of the diamond crystals makes it suitable for applications in low power research reactors, while a low sensitivity to gamma rays and low leakage current of the detector permit to reach good energy resolution. A fast coincidence between two crystals is used to reject background. The detector was read out using two different electronic chains connected to it by a few meters of cable. The first chain was based on conventional charge-sensitive amplifiers, the other used a custom fast charge amplifier developed for this purpose. The prototype has been tested at various neutron sources and showed its practicability. In particular, the detector was calibrated in a TRIGA thermal reactor (LENA laboratory, University of Pavia) with neutron fluxes of 10{sup 8} n/cm{sup 2}s and at the 3 MeV D-D monochromatic neutron source named FNG (ENEA, Rome) with neutron fluxes of 10{sup 6} n/cm{sup 2}s. The neutron spectrum measurement was performed at the TAPIRO fast research reactor (ENEA, Casaccia) with fluxes of 10{sup 9} n/cm{sup 2}s. The obtained spectra were compared to Monte Carlo simulations, modeling detector response with MCNP and Geant4. (authors)

• Research Organization: Institute of Electrical and Electronics Engineers (IEEE), New York, NY (United States)
• OSTI ID: 22531425
• Report Number(s): ANIMMA-2015-IO-39; TRN: US16V0209102366
• Resource Relation: Conference: ANIMMA 2015: 4. International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Lisboa (Portugal), 20-24 Apr 2015; Other Information: Country of input: France; 20 Refs.
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
AMPLIFIERS
COMPUTERIZED SIMULATION
CRYSTALS
DIAMONDS
ENERGY RESOLUTION
FAST REACTORS
G CODES
GAMMA RADIATION
LITHIUM 6
M CODES
MONTE CARLO METHOD
NEUTRON CONVERTERS
NEUTRON FLUX
NEUTRON SOURCES
NEUTRON SPECTRA
NEUTRON SPECTROMETERS
READOUT SYSTEMS
SENSITIVITY
THERMAL REACTORS
TRIGA TYPE REACTORS