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TY - CONF AU - Meigo, S.I. AU - Hasegawa, S.H. AU - Hiroki, H. AU - Hiroki, H.I. AU - Ishida, T. AU - Iwamoto, Y. AU - Maekawa, F.M. AU - Makimura, S. AU - Makoto, Y. AU - Nakamoto, T. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Measurement of Displacement Cross-Section for Structural Materials in High-Power Proton Accelerator Facility J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - As the increase of beam power of hadron accelerators, the damage to target material is essential. For estimation of damage such as target material used at the facility, displacement per atom (DPA), calculated by the particle flux multiplied displacement cross-section with cascade mode, is widely employed as an index of the damage. Although the DPA is employed as the standard, the experimental data of displacement cross-section are scarce for a proton in the energy region above 20 MeV. A recent study reports that the displacement cross section of tungsten has 8 times difference among the calculation models. Therefore, experimental data of the displacement cross-section is crucial. The displacement cross-section can be obtained by observing the change of resistivity of the sample cooled by GM cooler to sustain the damage. The sample is placed in the vacuum chamber placed at upstream of the beam dump for 3 GeV and 30 GeV synchrotrons in J-PARC, where the sample will be irradiated by the proton in the energy range between 0.4 and 30 GeV. In the vast energy range, the displacement cross-section can be obtained for the proton, which will help to improve the damage estimation of the target material. PB - JACoW Publishing CP - Geneva, Switzerland SP - 499 EP - 501 KW - experiment KW - proton KW - target KW - radiation KW - cryogenics DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-MOPML045 UR - http://jacow.org/ipac2018/papers/mopml045.pdf ER -