Handling radiation generated during an ion source commissioning

H T Ren; J Zhao; S X Peng; P N Lu; Q F Zhou; Y Xu; J Chen; T Zhang; A L Zhang; Z Y Guo; J E Chen

doi:10.1063/1.4833925

Handling radiation generated during an ion source commissioning

Rev Sci Instrum. 2014 Feb;85(2):02A930. doi: 10.1063/1.4833925.

Authors

H T Ren¹, J Zhao¹, S X Peng¹, P N Lu¹, Q F Zhou¹, Y Xu¹, J Chen¹, T Zhang¹, A L Zhang¹, Z Y Guo¹, J E Chen¹

Affiliation

¹ State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, Peking University, Beijing 100871, China.

PMID: 24593509
DOI: 10.1063/1.4833925

Abstract

Radiation is an important issue, which should be carefully treated during the design and commissioning of an ion source. Measurements show that X-rays are generated around the ceramics column of an extraction system when the source is powered up to 30 kV. The X-ray dose increases greatly when a beam is extracted. Inserting the ceramic column into a metal vacuum box is a good way to block X-ray emission for those cases. Moreover, this makes the online test of an intense H(+) ion beam with energy up to 100 keV possible. However, for deuteron ion source commissioning, neutron and gamma-ray radiation become a serious topic. In this paper, we will describe the design of the extraction system and the radiation doses of neutrons and gamma-rays measured at different D(+) beam energy during our 2.45 GHz deuteron electron cyclotron resonance ion source commissioning for PKUNIFTY (PeKing University Neutron Imaging FaciliTY) project at Peking University.