Development of wide field X-ray monitors with event driven SOI pixel detectors

2015 Fiscal Year Final Research Report

• Project/Area Number: 26610047
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Kyoto University
• Principal Investigator: Tsuru Takeshi 京都大学, 理学(系)研究科(研究院), 教授 (10243007)
• Co-Investigator(Renkei-kenkyūsha): MAEDA Keiichi 京都大学, 大学院理学研究科, 准教授 (00503880)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: Ｘ線ガンマ線天文学 / Ｘ線ガンマ線天文学 / 大立体角Ｘ線監視 / SOI型シリコンピクセル検出器

Outline of Final Research Achievements

In contrast of the gamma ray band, the science of X-ray transients with wide field X-ray monitors at the energy band lower than 10 keV is a remaining unexplored field in spite of its importance. We are aiming for the realization of a wide field X-ray camera with X-ray SOIPIXs. We made basic developments of X-ray SOIPIXs in this research. (1) A good uniformity of the quantum efficiency is required to obtain high angular resolution by the method of the determination of the center of gravity of the charge cloud. We modified the in-pixel circuit layout and successfully improved the uniformity. (2) We tried two methods of the back-side processes, "laser annealing" and "low temperature annealing" and successfully show prospect of achieving the requirement of 1um for the dead layer thickness.

Free Research Field

数物系科学