Confined alpha particle diagnostic system using an energetic He0 beam for ITER

Autor:	Nozomi Tanaka, Atsushi Okamoto, Masaki Nishiura, S. Takeuchi, Motoi Wada, Masashi Kisaki, Osamu Kaneko, Sumio Kitajima, K. Shinto, H. Sugawara, H. Aoyama, C. I. Walker, Mamiko Sasao, Mitsutaka Isobe
Rok vydání:	2006
Předmět:	Materials science chemistry.chemical_element Alpha particle Plasma Signal Signal-to-noise ratio chemistry Physics::Accelerator Physics Plasma diagnostics Atomic physics Instrumentation Helium Beam (structure) Noise (radio)
Zdroj:	Review of Scientific Instruments. 77:10F130
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.2347699
Popis:	The beam neutralization system for measurement of the spatial and velocity distributions of alpha particles of ITER plasmas was studied. As forward angle detection against the beam injection direction is required for effective neutralization, arrangement of the measurement system using possible ports in ITER configuration is proposed. The count rate of neutralized alpha particles produced by the double charge exchange interaction with energetic He0 beam particles injected is estimated. The ratios of signal to neutron-induced noise are evaluated. When a He0 beam produced by autodetachment from a 1–1.5MeV He− beam of 10mA is injected, the signal to noise ratio becomes greater than 1 at ρ
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5be541b0288bd2f081097f895d65f64a https://doi.org/10.1063/1.2347699 Zobrazit plný text záznamu