Signal Clustering and Particle Tracking Using a Single Event-Driven SOI Pixel Detector for Axion Search Experiment

15 Dec 2017, 10:50
20m
Conference Center (Okinawa Institute of Science and Technology Graduate University (OIST))

Conference Center

Okinawa Institute of Science and Technology Graduate University (OIST)

OIST, Onna, Okinawa 904-0495, Japan
ORAL SOI detectors Session16

Speaker

Johnny Alejandro Mora Grimaldo (The University of Tokyo)

Description

The current experiment aims to establish new limits on the axion mass for the hadronic window, using 57 Fe isotopes to search for an excess of solar axions at 14.4 keV. In order to improve the current limits, we make use of an X-ray SOI pixel detector; this device offers a fine granularity, a good energy resolution and a event-driven mode in the RoI (Region of Interest), besides the conventional frame readout mode (CCD-like). Since a reduction in the background levels from radioisotopes and cosmic-rays is required, we discuss the possibility of tracking and measuring the likelihood of the signal in being produced by different background particles, making use of the detector properties. In order to do this we develop a set of algorithms, and test their effectiveness on the first group of background data obtained with the XRPIX detector.

Primary author

Johnny Alejandro Mora Grimaldo (The University of Tokyo)

Co-authors

Ayaki Takeda (University of Miyazaki) Dr Hiroaki Aihara (The University of Tokyo) Kentaro Miuchi (Kobe University) Takeshi Go Tsuru (Kyoto University) Tatsuki Ose (The University of Tokyo) Yoshio Kamiya (University of Tokyo (JP)) Yoshiyuki Onuki (University of Tokyo) Yoshizumi Inoue (University of Tokyo)

Presentation materials