论文标题

在高压下氩和霓虹灯的非易易易易光混合物中的微孔微球

Microbulk Micromegas in non-flammable mixtures of argon and neon at high pressure

论文作者

Iguaz, F. J., Dafni, T., Canellas, C., Castel, J. F., Cebrián, S., Garza, J. G., Irastorza, I. G., Luzón, G., Mirallas, H., Chóliz, E. Ruiz

论文摘要

我们报告了高压AR+1%IC4H10和NE+2%IC4H10混合物中Microbulk Micromegas读数的系统表征。关于增益,电子传输和能量分辨率的实验数据,以氩气的1 bar到10 bar的广泛漂移和扩增电压以及从霓虹灯的5 bar到10 bar的压力,以1 bar的台阶为单位。测量所有压力的氩(霓虹灯)中高于1.7E3(1.7E4)的最大增益,而在其他扩增结构中通常观察到的压力显着降低。观察到22.1 KEV的竞争能量分辨率,但随着压力的轻微降解,可以观察到:从1 bar的10.8%到10 bar的1.8%到15.6%的FWHM,从刚刚在5 bar到15.0%fwhm fwhm at neon的1 10 bar。实验设置,过程和结果将详细介绍和讨论。这项工作是由TREX-DM实验激励的,Trex-DM实验在实验室subterráneoDeCanfranc中进行了上述混合物的运行,尽管结果可能对高压的其他时间投影室的其他应用引起了人们的关注。

We report on a systematic characterization of microbulk Micromegas readouts in high-pressure Ar+1%iC4H10 and Ne+2%iC4H10 mixtures. Experimental data on gain, electron transmission and energy resolution are presented for a wide range of drift and amplification voltages and pressures from 1 bar to 10 bar for argon and from 5 bar to 10 bar in neon, in steps of 1 bar. Maximum gains higher than 1.7e3 (1.7e4) in argon (neon) are measured for all pressures, remarkably without the significant decrease with pressure typically observed in other amplification structures. A competitive energy resolution at 22.1 keV, but with a slight degradation with pressure, is observed:from 10.8% at 1 bar to 15.6% FWHM at 10 bar in argon and from 8.3% at 5 bar to 15.0% FWHM at1 10 bar in neon. The experimental setup, procedure and the results will be presented and discussed in detail. The work is motivated by the TREX-DM experiment, that is operating in the Laboratorio Subterráneo de Canfranc with the mentioned mixtures, although the results may be of interest for other applications of time projection chambers at high pressures.

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