Abstract
In order to upgrade the liquid xenon gamma-ray detector, a new MPPC is being developed in collaboration with Hamamatsu Photonics. It needed to be sensitive for scintillation light of liquid xenon whose wavelength is in vacuum ultra-violet region, as large as 12×12 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> as one readout channel and capable of counting one photo-electron. Although these requirements were satisfied by previous prototypes, waveform from the prototypes had long decay time. As the countermeasure for this issue, we proposed subdivision and series connection of MPPC active region. We also tested the serial connection in liquid xenon environment with some configurations, and confirmed that waveform is as sharp as that of small (3×3 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) MPPC.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
