Scintillator-based diagnostic for fast ion loss measurements on DIII-D

被引：67

作者：

Fisher, R. K. ^{[1
]}

Pace, D. C. ^{[2
]}

Garcia-Munoz, M. ^{[3
]}

Heidbrink, W. W. ^{[2
]}

Muscatello, C. M. ^{[2
]}

Van Zeeland, M. A. ^{[1
]}

Zhu, Y. B. ^{[2
]}

机构：

[1] Gen Atom Co, San Diego, CA 92186 USA

[2] Univ Calif Irvine, Irvine, CA 92167 USA

[3] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2010年 / 81卷 / 10期

关键词：

D O I：

10.1063/1.3490020

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new scintillator-based fast ion loss detector has been installed on DIII-D with the time response (>100 kHz) needed to study energetic ion losses induced by Alfven eigenmodes and other MHD instabilities. Based on the design used on ASDEX Upgrade, the diagnostic measures the pitch angle and gyroradius of ion losses based on the position of the ions striking the two-dimensional scintillator. For fast time response measurements, a beam splitter and fiberoptics couple a portion of the scintillator light to a photomultiplier. Reverse orbit following techniques trace the lost ions to their possible origin within the plasma. Initial DIII-D results showing prompt losses and energetic ion loss due to MHD instabilities are discussed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3490020]

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页数：3

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