| Title |
The TRIUMF ARIEL RF Modulated Thermionic Electron Source |
| Authors |
- F. Ames, Y.-C. Chao, K. Fong, N. Khan, S.R. Koscielniak, A. Laxdal, L. Merminga, T. Planche, S. Saminathan, D.W. Storey
TRIUMF, Vancouver, Canada
- Y.-C. Chao, L. Merminga
SLAC, Menlo Park, California, USA
- C.K. Sinclair
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
|
| Abstract |
Within the ARIEL (Advanced Rare IsotopE Laboratory) at TRIUMF, a high power electron beam is used to produce radioactive ion beams via photo-fission. The electron beam is accelerated in a superconducting linac up to 50 MeV. The electron source provides electron bunches with charge up to 16 pC at a repetition frequency of 650 MHz leading to an average current of 10 mA . The kinetic energy of the electrons has been chosen to be 300 keV to allow direct injection into an accelerator cavity. The main components of the source are a gridded dispenser cathode (CPI 'Y845) in an SF6 filled vessel and an in-air HV power supply. The beam is bunched by applying DC and RF fields to the grid. Unique features of the gun are its cathode/anode geometry to reduce field emission, and transmission of RF modulation via a dielectric (ceramic) waveguide through the SF6. The latter obviates the need for an HV platform inside the vessel to carry the RF generator and results in a significantly smaller/simpler vessel. The source has been installed and first tests with accelerated beams have been performed. Measurements of the beam properties and results from the commissioning of the source will be presented.
|
| Funding |
ARIEL is funded by the Canada Foundation for Innovation, the Provinces AB, BC, MA, ON, QC, and TRIUMF. TRIUMF receives funding via a contribution agreement with the National Research Council of Canada |
| Paper |
download TUPRC020.PDF [1.317 MB / 4 pages] |
| Export |
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| Conference |
LINAC2016, East Lansing, MI, USA |
| Series |
Linear Accelerator Conference (28th) |
| Proceedings |
Link to full LINAC2016 Proccedings |
| Session |
Poster Session |
| Date |
27-Sep-16 16:00–17:00 |
| Main Classification |
4 Beam Dynamics, Extreme Beams, Sources and Beam Related Technology |
| Sub Classification |
4B Electron and Ion Sources, Guns, Photo Injectors, Charge Breeders |
| Keywords |
electron, cathode, emittance, TRIUMF, target |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Yoshishige Yamazaki (FRIB/MSU, East Lansing, MI, USA); Alberto Facco (FRIB/MSU, East Lansing, MI, USA); Amy McCausey (FRIB/MSU, East Lansing, MI, USA); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-169-4 |
| Published |
May 2017 |
| Copyright |
|
