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Kobayashi, Satoru; Francesconi, Marco; Galli, Luca; Ieki, Kei; Iwamoto, Toshiyuki; Libeiro, Terence; Matsuzawa, Nobuo; Molzon, William; Mori, Toshinori; Nakao, Mitsutaka; Ogawa, Shinji; Onda, Rina; Ootani, Wataru
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 08/2019, Letnik: 936Journal Article
We developed two complementary ways to measure the position of SiPMs inside liquid xenon detector for MEG II experiment; one uses laser tools and the other uses an X-ray beam. We measured the position of all SiPMs to an accuracy of 320 μm. •Precise alignment of SiPMs in liquid xenon detector with X-ray and laser.•The SiPM array is scanned with X-ray beam that makes a local energy deposit.•Reconstructed 3D SiPM array from an image taken by a laser scanner.•Reasonable thermal contraction was observed from the comparison.•Consistent shape of the SiPM array measured by two measurements.
