About Best Cyclotron Systems, Inc.

about BCSI

Best Cyclotron Systems, Inc. (BCSI) has been established in Springfield, Virginia, U.S.A., for the design and production of commercial cyclotrons. The company is a subsidiary of Best Medical International, a company renowned in the field of medical instrumentation and radiation therapy. Cyclotrons are manufactured and tested at Best Theratronics in Ottawa, Ontario, Canada. BCSI is currently focused on four different energy cyclotrons: the 14, 25, 35 and 70 MeV negative hydrogen ion accelerators.

Cyclotron Characteristics

All BEST's cyclotrons have room temperature magnets, deep valley design with four radial sectors, two dees in opposite valleys, external ion source and simultaneous beam extraction on opposite lines. See below for an illustration of the four cyclotrons.

The main characteristics of the cyclotron magnets are shown in the following table. The 25 MeV cyclotron is available in two versions: standard and upgradeable to 35 MeV.

Energy Extraction Energy Dimensions
(diameter x height) Weight Electric Power

14 MeV 14 MeV (fixed) 1.7 m x 1.0 m 14 tons 60 kVA

25 MeV 15 to 25 MeV 2.2 m x 1.2 m 25 tons 180 kVA

35 MeV 15 to 35 MeV 2.7 m x 1.5 m 55 tons 280 kVA

70 MeV 35 to 70 MeV 4.5 m x 1.7 m 150 tons 400 kVA