Title :
Initial operating experience with the auxiliary accelerating cavity for the TRIUMF cyclotron
Author :
Laxdal, R.E. ; Fong, K. ; Mackenzie, G.H. ; Pacak, V. ; Pearson, J.B. ; Root, L. ; Zach, M.
Author_Institution :
TRIUMF, Vancouver, BC, Canada
Abstract :
A 92-MHz auxiliary accelerating cavity has been installed in the TRIUMF cyclotron. The cavity operates at the fourth harmonic of the main RF frequency with a planned peak voltage of 150 kV. At full power it will almost double the present energy gain per turn in the 400-500 MeV range, reducing by 25% the stripping loss of the H/sup -/ beam. Low-current beam tests have been conducted at voltages of up to 90 kV and a maximum voltage of 145 kV has been attained. The cavity has also been used to flattop the integrated energy gain per turn. A description of the cavity design and a summary of the operating experience are given.<>
Keywords :
beam handling equipment; cavity resonators; ion accelerators; 150 kV; 400 to 500 MeV; 92 MHz; RF frequency; TRIUMF cyclotron; auxiliary accelerating cavity; design; fourth harmonic; integrated energy gain per turn; low current beam tests; operating experience; Acceleration; Automatic control; Control systems; Cyclotrons; Feedback; Frequency; Optical coupling; Radiofrequency amplifiers; Three-term control; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164449
