Large-field medical beam at the 184-Inch Synchrocyclotron

Technical Report · Fri Aug 01 04:00:00 EDT 1975

OSTI ID:6677979

Crowe, K; Kanstein, L; Lyman, J; Yeater, F

The 184-Inch Synchrocyclotron at the Lawrence Laboratory in Berkeley has, for many years, provided a highly reliable 930-MeV helium-ion beam of relatively high intensity for pituitary irradiation and treatment of lung lesions, etc. A plan view of the medical cave area is shown. For irradiations, a typical beam-spot size of approx. 5 cm with an intensity on the order of 2000 rads/min has been commonly available. With the recent advent of a new method of programming the Dee voltage, dose-rates have been increased to slightly more than 4000 rads/min. In order to enlarge upon the possible therapeutic, diagnostic, and radiobiological research capabilities of the 184-Inch Synchrocyclotron, we have recently developed a large-area helium-ion beam of approx. 30-cm dia with a uniform intensity of about 165 rads/min +- 2% over 86% of the diameter.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6677979
• Report Number(s): LBL-4235; ON: DE84015339
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
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