5th International Conference on Micro-Pattern Gas Detectors (MPGD2017)

Session

MPGD detector technologies - 3 (Chair: Matt Posik)

22 May 2017, 13:20

Morgan Hall D301 (Temple University - Philadelphia)

62. Preliminary Results of GEM based Transition Radiation Detector/ Tracker in Test Beam at JLab

Kondo Gnanvo (University of Virginia (US))

22/05/2017, 13:20

Oral presentation

A high luminosity polarized Electron Ion Collider (EIC) is envisioned as a next-generation US facility, as recommended by US Nuclear Science Advisory Committee in its 2015 Long Range Plan.
An intensive and comprehensive detector R&D is currently being carried out to address the experimental challenges of future physics programs of EIC. One such challenges is the electron identification,...

59. HARPO, a Micromegas+GEM TPC for gamma polarimetry above 1 MeV.

Paul Colas (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))

22/05/2017, 13:40

Oral presentation

Gamma-ray Compton telescopes lack sensitivity above 1 MeV and polarimetry is hampered by multiple scattering in calorimetric telescopes below 100 MeV. To fill the gap and use pair creation between 1 and a few tens of MeV, a high-pressure Argon TPC was proposed as a gamma-ray detector. A (30 cm)^3 demonstrator read out by a hybrid Micromegas+GEM has been built and exposed to polarized photon...

48. GEM foil gain prediction

Timo Eero Hilden (Helsinki Institute of Physics (FI))

22/05/2017, 14:00

Oral presentation

An optical Quality Assurance (QA) system has been developed at the Detector Laboratory of the Helsinki Institute of Physics. The diameters of the holes in a Gas Electron Multiplier (GEM) -foil, both in the copper and in the polyimide, can be measured with the system. The system is utilized for the QA of the GEM foils of the TPC Read-Out Chambers (ROC) being assembled for the upgrade of the...

30. Characterization and Validation of first GEM Foils produced in India

Ashok Kumar (University of Delhi (IN)), Md Naimuddin (University of Delhi (IN))

22/05/2017, 14:20

Oral presentation

The Gas Electron Multipliers (GEM) foils have been successfully produced for the first time in Indian in collaboration with Indian Industry. The foil production process has been established successfully using the double-mask etching technique. We will present the first results on a comprehensive quality control (QC) and characterisation of these GEM foils involving optical (geometrical) and...

28. GEM single-mask characterization and influence of GEM foil orientation

Jeremie Alexandre Merlin (CERN)

22/05/2017, 14:40

Oral presentation

The Gas Electron Multiplier (GEM) technology is used in CMS muon detectors to amplify the electronic charge left after the crossing of a particle. The GEM structure consists of a thin polyimide foil, coated with copper on both sides and perforated with a high density of microscopic holes. Several GEM foils can be associated together with a dedicated stretching structure to form the GEM...