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The thin-foil magne...
The thin-foil magnetic proton recoil neutron spectrometer MPRu at JET
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- Andersson Sundén, Erik (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Sjöstrand, Henrik (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Conroy, Sean (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Ericsson, Göran (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Gatu Johnson, Maria (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Giacomelli, L (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Hellesen, Carl (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Hjalmarsson, Anders (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Ronchi, E (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Weiszflog, Matthias (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Källne, Jan (author)
- Uppsala universitet,Elektricitetslära
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- Gorini, G (author)
- Univ Milano -Bicocca, Milano, Italy
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- Tardocchi, M (author)
- Univ Milano -Bicocca, Milano, Italy
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- Combo, A (author)
- IST, Portugal
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Cruz, N (author)
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Batista, A (author)
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Pereira, R (author)
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Fortuna, R (author)
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Sousa, J (author)
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Popovichev, S (author)
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
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In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 610:3, s. 682-699
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Neutrons are produced in fusion energy experiments with both deuterium (D) and deuterium–tritium (DT) plasmas. Neutron spectroscopy is a valuable tool in the study of the underlying fuel ion populations. The magnetic proton recoil neutron spectrometer, originally installed at JET in 1996 for 14-MeV neutron measurements, has been upgraded, with the main aim of improving its signal-to-background ratio (S/B), making measurements of the 2.5-MeV neutron emission in D plasmas possible. The upgrade includes a new focal-plane detector, based on the phoswich technique and consequently less sensitive to background, and a new custom-designed digital data acquisition system based on transient recorder cards. Results from JET show that the upgraded MPRu can measure 2.5-MeV neutrons with S/B=5, an improvement by a factor of 50 compared with the original MPR. S/B of 2.8×104 in future DT experiments is estimated. The performance of the MPRu is exemplified with results from recent D plasma operations at JET, concerning both measurements with Ohmic, ion cyclotron resonance (ICRH) and neutral beam injection (NBI) plasma heating, as well as measurements of tritium burn-up neutrons. The upgraded instrument allows for 2.5-MeV neutron emission and deuterium ion temperature measurements in plasmas with low levels of tritium, a feature necessary for the ITER experiment.
Keyword
- Neutron
- Spectrometer
- 14 MeV neutrons
- 2.5 MeV neutrons
- MPR
- MPRu
- Fusion
- Diagnostic
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Andersson Sundén ...
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Sjöstrand, Henri ...
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Conroy, Sean
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Ericsson, Göran
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Gatu Johnson, Ma ...
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Giacomelli, L
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Hellesen, Carl
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Hjalmarsson, And ...
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Ronchi, E
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Weiszflog, Matth ...
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Källne, Jan
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Gorini, G
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Tardocchi, M
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Combo, A
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Cruz, N
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Batista, A
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Pereira, R
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Fortuna, R
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Sousa, J
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Popovichev, S
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show less...
- Articles in the publication
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Nuclear Instrume ...
- By the university
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Uppsala University