A Pulsed Synchrocyclotron Ion Source Using a Single Cold Cathode

Autor:	W. Diamond, R. Cohen, D. W. Storm
Rok vydání:	1979
Předmět:	Nuclear and High Energy Physics Materials science business.industry Cyclotron Electrical engineering Ion source Cathode law.invention Anode Optics Nuclear Energy and Engineering Synchrocyclotron law Cold cathode Thermal emittance Electrical and Electronic Engineering business Beam (structure)
Zdroj:	IEEE Transactions on Nuclear Science. 26:2171-2174
ISSN:	1558-1578 0018-9499
Popis:	During a development program to improve the beam current accepted by the Nevis Synchrocyclotron, a new source using a single cold cathode was developed. The change to a single cold cathode has resulted in a marked improvement in the performance of the source compared to operation as a PIG source with the same chimney and extraction geometry. The extracted H+ current was greater than 90% compared to about 70% for the PIG source, and the vertical emittance was improved by over a factor of 2. Pulsed beam currents of up to 80 mA were extracted from a slit of 1.6 mm by 6.25 mm high. Although the extracted current was less than the current from the PIG source (? 150mA), the charge per pulse accepted by the accelerator (as measured by an internal probe at a radius corresponding to 30 MeV) increased from 20 to as high as 100 nanocoulombs/pulse.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d598190a5832d5bed732bfb1c5b98243 https://doi.org/10.1109/tns.1979.4329830 Zobrazit plný text záznamu