Optics of the NIFS negative ion source test stand by infrared calorimetry and numerical modelling

P Veltri; V Antoni; P Agostinetti; M Brombin; K Ikeda; M Kisaki; H Nakano; E Sartori; G Serianni; Y Takeiri; K Tsumori

doi:10.1063/1.4932982

Optics of the NIFS negative ion source test stand by infrared calorimetry and numerical modelling

Rev Sci Instrum. 2016 Feb;87(2):02B908. doi: 10.1063/1.4932982.

Authors

P Veltri¹, V Antoni¹, P Agostinetti¹, M Brombin¹, K Ikeda², M Kisaki², H Nakano², E Sartori¹, G Serianni¹, Y Takeiri², K Tsumori²

Affiliations

¹ Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
² National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan.

PMID: 26932080
DOI: 10.1063/1.4932982

Abstract

At National Institute for Fusion Science (NIFS), a multi-ampere negative ion source is used to support the R&D on H(-) production, extraction, and acceleration. In this contribution, we study the characteristics of the acceleration system of this source, in order to characterize the beam optics at different operational conditions. A dedicated experimental campaign was carried out at NIFS, using as main diagnostic the infra-red imaging of the beam profiles. The experimental measurements are also compared with 3D numerical simulations, in order to validate the codes and to assess their degree of reliability. The simulations show a satisfactory agreement with the experimental results.