Line-of-sight injection into a tandem accelerator

A beamline has been designed to accommodate an AMS ion source at the 0 position, injecting in a straight line into the Livermore CAMS tandem accelerator. An AMS source at this position will allow simultaneous injection of isotopes, providing a testbed for injection techniques which may be used in a low cost RFQ accelerator for tritium AMS measurements. The use of a Wien filter in the beamline will also allow selection of individual isotopes, with the capability of rapid sequential injection of isotopes. The stable isotope current may be collected in a Faraday cup while the radioisotope is injected into the tandem, allowing continuous monitoring of ion source output for calibration purposes. This Wien filter and injection beamline should be adequate for biomedical measurements of 14C as well as for tritium. (orig.)