Detail Design of the Electron Dump for the SPIDER Beam Source

Author

Agostinetti, P. ; Chitarin, G. ; Marcuzzi, D. ; Pavei, M. ; Pilan, N. ; Rizzolo, A. ; Serianni, G. ; Sonato, P. ; Trevisan, L. ; Veltri, P.

Author_Institution

Consorzio RFX, Assoc. EURATOM-ENEA sulla Fusione, Padova, Italy

Volume

40

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

629

Lastpage

634

Abstract

An electron dump (ED) has been developed and added to the SPIDER negative ion beam source in order to dispose of the electrons exiting from the accelerator, which are mainly generated by stripping reactions. This component prevents from having unwanted and possibly concentrated heat load from electrons on the downstream components and permits to obtain on the diagnostic calorimeter a detailed measurement of the negative ion beam. The detail design of the ED is here described, together with the main design choices that have driven the design process. The physics and thermomechanical analyses, carried out to compare the different design proposals, are also presented.

Keywords

Tokamak devices; ion beams; ion sources; negative ions; particle beam diagnostics; plasma radiofrequency heating; SPIDER negative ion beam source; concentrated heat load; diagnostic calorimeter; downstream components; electron dump; stripping reactions; thermomechanical analysis; Acceleration; Copper; Electron tubes; Heating; Manifolds; Particle beams; Trajectory; Beam; SPIDER (Source for Production of Ion of Deuterium Extracted from RF plasma); dump; electron; source;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2179947

Filename

6125251