Micro-TPC, a time projection chamber(TPC) with micro pixel chamber(μ-PIC) readout was developed for the detection of the three-dimensional fine(sub-m illimeter) tracks of charged particles. We developed a two-dimensional position sensitive gaseous detector, or the μ-PIC, with the detection area of 10×10 cm2 and 65536 anode electrodes of 400 μm pitch. We achieved the gas gain of over 10000 without any other multipliers. With the pipe-line readout system specially developed for the μ-PIC, we detected X-rays at the rate as high as 7.7 Mcps. We attached a drift cage with an 8 cm drift length to the μ-PIC and developed a micro-TPC. We measured the basic performances of the micro-TPC and took three-dimensional tracks of electrons. We also developed a prototype of the MeV gamma-ray imaging detector which is a hybrid of the micro-TPC and NaI(Tl) scintillators and confirmed its concept by reconstructing the obtained data.
@article{arxiv.hep-ex/0301012,
title = {Performance of the TPC with Micro Pixel Chamber Readout: micro-TPC},
author = {Kentaro Miuchi and Hidetoshi Kubo and Tsutomu Nagayoshi and Atsuhiko Ochi and Reiko Orito and Atsushi Takada and Toru Tanimori and Masaru Ueno},
journal= {arXiv preprint arXiv:hep-ex/0301012},
year = {2009}
}