Temperature Measurements of Carbon Stripper Foil by Pulesd 650kev H- Ion Beam*
نویسندگان
چکیده
Thick carbon foils (>300 mg/cm)has been used for stripping of H ion beam into protons at the injection stage of the 3GeV Rapid Cycling Synchrotron (3GeV-RCS) in J-PARC. The carbon stripper foils with high durability at high temperature >1800 oK are strongly required. A new irradiation system for foils is in progress using the KEK 650keV Cockcroft-Walton accelerator which can simulate the high-energy deposition upon foils in the RCS. The most important factor that affects the foil lifetime is the foil temperature. We are developing the measuring method of the temperature using a photo-transistor when a foil is irradiated by the short pulses with several tens ~ several hundreds microsecond durations. Preliminary results are described in this report.
منابع مشابه
Realization of Thick Hybrid Type Carbon Stripper Foils with High Durability at 1800k for Rcs of J-parc
The Japan-Proton Accelerator Research Complexes (J-PARC) requires thick carbon stripper foils (250-500 μg/cm) to strip electrons from the H beam supplied by the linac before injection into the RCS (Rapid Cycling Synchrotron). The 200 MeV H beam from the linac has a pulse length of 0.5 ms with a repetition rate of 25 Hz and an average beam current of 335 μA. For this high-energy and high-intensi...
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