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TY - CONF AU - Tongu, H. AU - Geng, R.L. AU - Hayano, H. AU - Hokonohara, H. AU - Iwashita, Y. AU - Kubo, T. AU - Oikawa, H. AU - Palczewski, A.D. AU - Saeki, T. AU - Yamamoto, Y. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Development of High Sensitive X-Ray Mapping for SC Cavities J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - We developed an X-ray mapping system sX-map for superconducting cavities. The sensors are inserted under the stiffener rings between cavity cells, whose locations are close to the iris areas. The whole circuits are im-mersed in liquid He and the multiplexed signals reduces the number of cables to the room temperature region. sX-map has the advantages in its compact size, low cost and simple setup for nondestructive inspections. The sX-map system detected X-rays from field emissions in vertical RF tests of ILC 9-cell cavities at Jefferson Lab (JLab) and KEK. sX-map showed an excellent performance in the meas-urement test at JLab, it exhibited a high sensitivity com-pared with an the fixed diode rings colocated at irises and ion chamber located out side of the vertical test cryostat. PB - JACoW CP - Geneva, Switzerland SP - 1040 EP - 1042 KW - cavity KW - survey KW - operation KW - interface KW - cryogenics DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-MOPVA075 UR - http://jacow.org/ipac2017/papers/mopva075.pdf ER -