Best Cyclotron Systems Inc (BCSI) is currently developing 14 MeV, 25 MeV, 35MeV and 70MeV cyclotrons for radioisotope production and research applications as well as the entire spectrum of targets and nuclear synthesis modules for the production of Positron Emission Tomography (PET), Single Photon Emission Computed Tomography (SPECT) and radiation therapy isotopes. The company is a subsidiary of Best Medical International, renowned in the field of medical instrumentation and radiation therapy. All cyclotrons have external negative hydrogen ion sources, four radial sectors with two dees in opposite valleys, cryogenic vacuum system and simultaneous beam extraction on opposite lines. The beam intensity ranges from 400 A to 1000 A, depending on the cyclotron energy and application [1].
We will describe the operation of a tandem accelerator based Contraband Detection System (CDS) built jointly by Advanced Energy Systems (AES) and TRIUMF, which employs the Nuclear Resonance Absorption (NRA) technique for detecting the attenuation of 9.17 MeV gamma rays by 14 N. A key technology of the CDS device is a high current tandem accelerator designed to provide a 1.76 MeV, 10 mA proton beam to a high power thin film 13 C target. We will describe the operation of the accelerator and present data on the measured output current, emittance, and energy spread using the integrated 13 C target yield. This system has been used to generate images of explosive simulants which can be separated from non-nitrogenous background.
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