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Report No.
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Thermal analysis of the injection beam dump of 3 GeV rapid cycling synchrotron

Kuramochi, Masaya*; Yamamoto, Kazami  ; Kinsho, Michikazu 

The injection beam dump of the 3 GeV rapid cycling synchrotron (3 GeV-RCS) is to be installed to absorb the H$$^{-}$$ and H$$^{0}$$ beams that can not be changed into H$$^{+}$$ beam with a graphite foil. We estimate the maximum temperature and thermal stress of the injection beam dump. As a result, the temperature at the center region made of iron reached up to 370 K after several operation cycles (one cycle is three-week operation including one-week interval) under the 1kW-beam injection. Then, the temperature at the boundary between the iron region of the beam dump and the concrete wall of the tunnel was rather low temperature of about 320 K. And the maximum Mises stresses of 96 MPa and about 0.2 MPa were generated in the iron region and the concrete wall respectively. These values were much lower than the allowable temperature and stresses.

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