MPGD 2013 & 11th RD51 collaboration meeting

Session

Wednesday (MPGD mid-morning session)

3 Jul 2013, 11:15

Paraninfo buidling, Zaragoza, Spain

Conveners

Wednesday (MPGD mid-morning session)

• Maxim TITOV (CEA Saclay)

76. Property of LCP-GEM in Pure Dimethyl Ether under Low Pressure

Yoko Takeuchi

03/07/2013, 11:15

We have performed a systematic investigation of the gain properties of the GEM foil with copper-clad liquid crystal polymer insulator (LCP-GEM)[1], which will be applied to the photoelectric X-ray polarimeter using a TPC technique for NASA’s sounding rocket experiment XACT. The pure dimethyl ether (DME) as TPC gas is slow drift velocity and small diffusion. We anticipate that the optimum DME...

77. Two-phase Cryogenic Avalanche Detectors in Ar with THGEM/GAPD-matrix optical readout

Andrey Sokolov (Ecole Polytechnique)

03/07/2013, 11:40

Two-phase Cryogenic Avalanche Detectors (CRADs) with THGEM multipliers have become an emerging technique for rare-event experiments. In this work the performance of two-phase CRADs in Ar with THGEM/GAPD-matrix optical readout has for the first time demonstrated in terms of high spatial resolution and low detection threshold. Here the double-THGEM charge multiplier was combined with a 3x3...

78. Micromegas as low background x-ray detectors for axion experiments

Javier Gracia Garza (Universidad de Zaragoza (ES))

03/07/2013, 12:05

Axion helioscopes aim at the detection of solar axions through their conversion into x-rays in laboratory magnetic fields. The use of low background and low energy threshold x-ray detectors is an essential component contributing to the sensitivity of these searches. Micromegas readouts operated in a Time Projection Chamber have demonstrated they can accomplish these goals. The possibility of...

79. GEM-TPC X-ray Polarimeter onboard GEMS Satellite

Toru Tamagawa

03/07/2013, 12:25

We have fabricated a semi-flight-ready micro GEM-TPC for the X-ray polarimeter telescope onboard the NASA's Gravity and Extremely Magnetism Small Explorer (GEMS) mission. The use of GEM-TPC in space is very different technical challenge from the uses in celerator based experiments. We carefully tested various issues to ensure two-years lifetime of the detector in orbit, including aging of the...

80. ASTROBOX: New detection for very low-energy protons spectra from β-delayed proton decay

Emanuel Pollaco

03/07/2013, 12:50

AstroBox, was developed to perform low energy proton spectroscopy from β-delayed proton emitters of interest to astrophysics studies: Energetic precursor nuclei are identified and stopped in the gas volume of the detector. The subsequent β or β-proton decay trace ionized paths in the gas. The ionization electrons are drifted in an electric field and are amplified by employing a Micro Pattern...