The open archive for STFC research publications

Full Record Details

Persistent URL http://purl.org/net/epubs/work/32011487
Record Status Checked
Record Id 32011487
Title Initial Commissioning of the Rutherford Appleton Laboratory (RAL) Scaled Negative Penning Ion Source
Abstract A new high duty factor, scaled Penning surface plasma source is being developed at RAL. This paper provides initial commissioning results. A stable high-current (up to 100 A) pulsed discharge is obtained, but the anode overheats, caused by poor thermal contact at elevated temperatures. The overheating anode yields a noisy discharge, with low output current, and makes high duty factor operation impossible. The performance of a thermal interface material for aperture plate (plasma electrode) cooling is detailed. An update on the cathode heaters is provided. The anode to source-body fit is analysed at different temperatures for different combinations of mechanical tolerances. This offers insights when compared to ISIS operational sources. A new anode with modified tolerance dimensions for improved fit is being manufactured and will be tested in June 2016.
Organisation ISIS , ISIS , STFC
Funding Information
Related Research Object(s):
Licence Information:
Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 7th International Particle Accelerator Conference (IPAC'16), Busan, Korea, 8-13 May 2016, (2016): 1314-1316. http://accelconf.…/papers/tupmr032.pdf 2016