The response of a fast scintillator screen (YAP:Ce) to low energy ions (0-40 keV) and its use to detect fast-ion-loss in stellarator TJ-II

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4959944· OSTI ID:22596571

Zurro, B.; Baciero, A.; Jiménez-Rey, D.; Malo, M. ^[1]; Tribaldos, V. ^[2]; Crespo, M. T.; Muñoz, D. ^[3]

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1. Laboratorio Nacional de Fusión, CIEMAT, Madrid (Spain)
2. Departamento de Física, Universidad Carlos III de Madrid, Leganés (Spain)
3. Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Madrid (Spain)

A systematic study of scintillation materials was undertaken to improve the time resolution of the fast ion diagnostic currently installed at TJ-II stellarator. It was found that YAP:Ce (formula YAlO{sub 3}:Ce, Yttrium Aluminum Perovskite doped with Cerium) ionoluminescence offers better sensitivity and time response compared to the standard detector material, SrGa{sub 2}S{sub 4}:Eu (TG-Green), currently used in TJ-II. A comparison between both materials was carried out by irradiating them with H{sup +} ions of up to 40 keV using a dedicated laboratory setup. It is found that for the low energy ions of interest at TJ-II, YAP:Ce offers 20 times higher sensitivity than TG-Green and much faster decay time, 27 ns versus 540 ns. It is expected that the use of YAP:Ce in combination with a faster data acquisition and an ion counting software as part of the TJ-II ion luminescent probe will provide 20 times faster data on ion loss.

• OSTI ID: 22596571
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
CERIUM
COMPARATIVE EVALUATIONS
COMPUTER CODES
DATA ACQUISITION
DOPED MATERIALS
KEV RANGE 10-100
LUMINESCENCE
PEROVSKITE
PROBES
SCINTILLATIONS
SCREENS
SENSITIVITY
TIME RESOLUTION
YTTRIUM