Velocity-space sensitivities of neutron emission spectrometers at the tokamaks JET and ASDEX upgrade in deuterium plasmas

A.S. Jacobsen, F. Binda, C. Cazzaniga, J. Eriksson, A. Hjalmarsson, M. Nocente, Mirko Salewski, G. Tardini

Research output: Contribution to journalJournal articleResearchpeer-review

251 Downloads (Pure)

Abstract

Future fusion reactors are foreseen to be heated by the energetic alpha particles produced in fusion reactions. For this to happen, it is important that the energetic ions are sufficiently confined. In present day fusion experiments, energetic ions are primarily produced using external heating systems such as neutral beam injection and ion cyclotron resonance heating. In order to diagnose these fast ions, several different fast-ion diagnostics have been developed and implemented in the various experiments around the world. The velocity-space sensitivities of fast-ion diagnostics are given by so-called weight functions. Here instrument-specific weight functions are derived for neutron emission spectrometry detectors at the tokamaks JET and ASDEX Upgrade for the 2.45 MeV neutrons produced in deuterium-deuterium reactions in deuterium plasmas. Using these, it is possible to directly determine which part of velocity space each detector observes.
Original languageEnglish
Article number073506
JournalReview of Scientific Instruments
Volume88
Issue number7
Number of pages9
ISSN0034-6748
DOIs
Publication statusPublished - 2017

Fingerprint Dive into the research topics of 'Velocity-space sensitivities of neutron emission spectrometers at the tokamaks JET and ASDEX upgrade in deuterium plasmas'. Together they form a unique fingerprint.

Cite this