Development of the Micro Pixel Chamber with resistive electrodes

Abstract

We developed a novel design of a Micro Pixel Chamber ($\mu$-PIC) with resistive electrodes for a charged-particle-tracking detector in high-rate applications. Diamond-Like Carbon (DLC) thin film is used for the cathodes. The resistivity can be controlled flexibly ($10^{5-7}k\Omega /sq.$) at high uniformity. The fabrication-process was greatly improved and the resistive $\mu$-PIC could be operated at 10$\times$10 $\mathrm{c}{\mathrm{m}}^2$. Resistors for the HV bias and capacitors for the AC coupling were completely removed by applying PCB and carbon-sputtering techniques, and the resistive $\mu$-PIC became a very compact detector. The performances of our new resistive $\mu$-PIC were measured in various ways. Consequently, it was possible to attain high gas gains ($>10^4$), high detection efficiency, and position resolution exceeding 100 $\mu$m. The spark current was suppressed, and the new resistive $\mu$-PIC was operated stably under fast-neutrons irradiation. These features offer solutions for a charged-particle-tracking detector in future high-rate applications.

37pages, 40figures, To be submitted to Nucl. Instrum. Methods Phys. Res. A

References in corpus (4)

• Neutron imaging detector based on the muPIC micro-pixel chamber
• Research on discharges in micropattern and small gap gaseous detectors
• Perspectives of Micro-Pattern Gaseous Detector Technologies for Future Physics Projects
• Micro Pixel Chamber with resistive electrodes for spark reduction