A mass resolved, high resolution neutral particle analyzer for C-2U

R Clary; A Roquemore; J Douglass; D Jaramillo; S Korepanov; R Magee; S Medley; A Smirnov

doi:10.1063/1.4958911

A mass resolved, high resolution neutral particle analyzer for C-2U

Rev Sci Instrum. 2016 Nov;87(11):11E703. doi: 10.1063/1.4958911.

Authors

R Clary¹, A Roquemore², J Douglass¹, D Jaramillo¹, S Korepanov¹, R Magee¹, S Medley², A Smirnov¹

Affiliations

¹ Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688, USA.
² Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.

PMID: 27910391
DOI: 10.1063/1.4958911

Abstract

C-2U is a high-confinement, advanced beam driven field-reversed configuration plasma experiment which sustains the configuration for >5 ms, in excess of typical MHD and fast particle instability times, as well as fast particle slowing down times. Fast particle dynamics are critical to C-2U performance and several diagnostics have been deployed to characterize the fast particle population, including neutron and proton detectors. To increase our understanding of fast particle behavior and supplement existing diagnostics, an E ∥ B neutral particle analyzer was installed, which simultaneously measures H⁰ and D⁰ flux with large dynamic range and high energy resolution. Here we report the commissioning of the E ∥ B analyzer, confirm the instrument has energy resolution ΔE/E≲0.1 and a dynamic range E_max/E_min∼30, and present measurements of initial testing on C-2U.