Simultaneous H/D/T and 3He/4He absolute concentration measurements with an optical Penning gauge on JET
- French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM)
- ORNL
- Culham Centre for Fusion Energy (CCFE), Abingdon, UK
- Laboratory for Plasma Physics-ERM/KMS (LPP-ERM/KMS), Brussels, Belgium
- UK Atomic Energy Authority (UKAEA)
The Optical Penning (or Species-Selective Penning) Gauge technique is used for the measurement of the H2/D2/T2 fuel isotopic composition and He/D2 concentration in the neutralized particle exhaust of fusion devices. An Optical Penning detection system has already been used in JET during its first deuterium-tritium campaigns (DTE1) and has been chosen by ITER. Recent improvements to the sub-divertor diagnostic suite as well as the optical instrumentation, in preparation for the next DT campaign, have improved the optical throughput of the measurement and enabled 3He/D2 detection down to 0.1 %. For the first time, the 3He/4He isotopic ratio can be measured simultaneously with the H/D/T ratio. This technique is of particular interest for ion cyclotron resonance frequency (ICRF) heating scenarios.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1813243
- Resource Relation:
- Journal Volume: 170; Conference: 31st Symposium on Fusion Technology (SOFT2020) - Dubrovnik, , Croatia - 9/20/2020 12:00:00 PM-9/25/2020 4:00:00 AM
- Country of Publication:
- United States
- Language:
- English
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