Transmission diamond membrane detector and vacuum window for external microbeams

イオンマイクロビームに対する透過型検出器及び大気取出し窓としてのダイヤモンド薄膜

Skukan, N.*; Grilj, V.*; Pomorski, M.*; 加田 渉*; 岩本 直也*; 大島 武; 神谷 富裕; Jaksic, M.*

Skukan, N.*; Grilj, V.*; Pomorski, M.*; Kada, Wataru*; Iwamoto, Naoya*; Oshima, Takeshi; Kamiya, Tomihiro; Jaksic, M.*

In order to develop diamond thin film detectors, an approximately 6 m thick membrane which was made of low cost optical quality scCVD diamond material was fabricated. The membrane was mounted to a flange as a vacuum exit window and characterized as a particle detector. The negligible intrinsic noise of the device provides an excellent signal-to-noise ratio, even for energetic proton incidence. Besides, the outstanding results of the radiation-hardness test indicate a wider possible range of device applications, including those that involve high currents of charged particles or long exposure to radiation.