An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)

M. Sasao; M. Kisaki; T. Kobuchi; K. Tsumori; N. Tanaka; K. Terai; A. Okamoto; S. Kitajima; O. Kaneko; K. Shinto; M. Wada

doi:10.1063/1.3673493

An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)

M. Sasao, M. Kisaki, T. Kobuchi, K. Tsumori, N. Tanaka, K. Terai, A. Okamoto, S. Kitajima, O. Kaneko, K. Shinto, M. Wada

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

An energetic helium neutral beam is involved in the beam neutralization measurement system of alpha particles confined in a DT fusion plasma. A full size strong-focusing He⁺ ion source (2 A, the beam radius of 11.3 mm, the beam energy less than 20 keV). Present strong-focusing He⁺ ion source shows an emittance diagram separated for each beamlet of multiple apertures without phase space mixing, despite the space charge of a beamlet is asymmetric and the beam flow is non-laminar. The emittance of beamlets in the peripheral region was larger than that of center. The heat load to the plasma electrode was studied to estimate the duty factor for the ITER application.

Original language	English
Article number	02B718
Journal	Review of Scientific Instruments
Volume	83
Issue number	2
DOIs	https://doi.org/10.1063/1.3673493
Publication status	Published - 2012 Feb
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

Access to Document

10.1063/1.3673493

Cite this

@article{a0bdf6ecc3b64962be1d17f1dd36bbec,

title = "An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)",

abstract = "An energetic helium neutral beam is involved in the beam neutralization measurement system of alpha particles confined in a DT fusion plasma. A full size strong-focusing He+ ion source (2 A, the beam radius of 11.3 mm, the beam energy less than 20 keV). Present strong-focusing He+ ion source shows an emittance diagram separated for each beamlet of multiple apertures without phase space mixing, despite the space charge of a beamlet is asymmetric and the beam flow is non-laminar. The emittance of beamlets in the peripheral region was larger than that of center. The heat load to the plasma electrode was studied to estimate the duty factor for the ITER application.",

author = "M. Sasao and M. Kisaki and T. Kobuchi and K. Tsumori and N. Tanaka and K. Terai and A. Okamoto and S. Kitajima and O. Kaneko and K. Shinto and M. Wada",

note = "Funding Information: This work was supported by Grant-in-Aid for Priority Area 442-16082101, Ministry Education, Science and Culture Japan, and in part by Joint Research Programme at the National Institute for Fusion Science.",

year = "2012",

month = feb,

doi = "10.1063/1.3673493",

language = "English",

volume = "83",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "2",

}

TY - JOUR

T1 - An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)

AU - Sasao, M.

AU - Kisaki, M.

AU - Kobuchi, T.

AU - Tsumori, K.

AU - Tanaka, N.

AU - Terai, K.

AU - Okamoto, A.

AU - Kitajima, S.

AU - Kaneko, O.

AU - Shinto, K.

AU - Wada, M.

N1 - Funding Information: This work was supported by Grant-in-Aid for Priority Area 442-16082101, Ministry Education, Science and Culture Japan, and in part by Joint Research Programme at the National Institute for Fusion Science.

PY - 2012/2

Y1 - 2012/2

N2 - An energetic helium neutral beam is involved in the beam neutralization measurement system of alpha particles confined in a DT fusion plasma. A full size strong-focusing He+ ion source (2 A, the beam radius of 11.3 mm, the beam energy less than 20 keV). Present strong-focusing He+ ion source shows an emittance diagram separated for each beamlet of multiple apertures without phase space mixing, despite the space charge of a beamlet is asymmetric and the beam flow is non-laminar. The emittance of beamlets in the peripheral region was larger than that of center. The heat load to the plasma electrode was studied to estimate the duty factor for the ITER application.

AB - An energetic helium neutral beam is involved in the beam neutralization measurement system of alpha particles confined in a DT fusion plasma. A full size strong-focusing He+ ion source (2 A, the beam radius of 11.3 mm, the beam energy less than 20 keV). Present strong-focusing He+ ion source shows an emittance diagram separated for each beamlet of multiple apertures without phase space mixing, despite the space charge of a beamlet is asymmetric and the beam flow is non-laminar. The emittance of beamlets in the peripheral region was larger than that of center. The heat load to the plasma electrode was studied to estimate the duty factor for the ITER application.

UR - http://www.scopus.com/inward/record.url?scp=84857885781&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84857885781&partnerID=8YFLogxK

U2 - 10.1063/1.3673493

DO - 10.1063/1.3673493

M3 - Article

C2 - 22380323

AN - SCOPUS:84857885781

SN - 0034-6748

VL - 83

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 2

M1 - 02B718

ER -

An alpha particle measurement system using an energetic neutral helium beam in ITER (invited)

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this