Measurement Of Gas Electron Multiplier (GEM) Detector Characteristics

Journal Article · Wed Jun 01 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3586087· OSTI ID:21513357

Park, Seongtae; Baldelomar, Edwin; Sosebee, Mark; White, Andy; Yu, Jaehoon ^[1]; Park, Kwangjune ^[2]

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1. University of Texas at Arlington, Arlington, TX 76019 (United States)
2. KAERI, Daejeon, Korea 305-600 (Korea, Republic of)

The High Energy Physics group of the University of Texas at Arlington has been developing gas electron multiplier detectors to use them as sensitive gap detectors in digital hadron calorimeters for the International Linear Collider, a future high energy particle accelerator. For this purpose, we constructed numerous GEM detectors that employ double GEM layers. In this study, two kinds of prototype GEM detectors were tested; one with 28x28 cm{sup 2} active area double GEM structure with a 3 mm drift gap, a 1 mm transfer gap and a 1 mm induction gap and the other with two 3x3 cm{sup 2} GEM foils in the amplifier stage with a 5 mm drift gap, a 2 mm transfer gap and a 1 mm induction gap. The detectors' characteristics from exposure to high-energy charged particles and other radiations were measured using cosmic rays and {sup 55}Fe radioactive source. From the {sup 55}Fe tests, we observed two well separated characteristic X-ray emission peaks and confirmed the detectors' functionality. We also measured chamber gains to be over 6000 at a high voltage of 395 V across each GEM electrode. The responses to cosmic rays show the spectra that fit well to Landau distributions as expected from minimum ionizing particles.

• OSTI ID: 21513357
• Journal Information: AIP Conference Proceedings, Vol. 1336, Issue 1; Conference: CAARI 2010: 21. International Conference on the Application of Accelerators in Research and Industry, Fort Worth, TX (United States), 8-13 Aug 2010; Other Information: DOI: 10.1063/1.3586087; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AMPLIFIERS
CALORIMETERS
CHARGED PARTICLES
COSMIC RADIATION
ELECTRIC POTENTIAL
ELECTRODES
ELECTRON MULTIPLIER DETECTORS
ELECTRON MULTIPLIERS
EMISSION
FOILS
HADRONS
HIGH ENERGY PHYSICS
IONIZATION
IRON 55
LANDAU FLUCTUATIONS
LAYERS
LINEAR COLLIDERS
PEAKS
RADIATION SOURCES
SENSORS
SPECTRA
X RADIATION
ACCELERATORS
BETA DECAY RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
EVEN-ODD NUCLEI
FLUCTUATIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
IRON ISOTOPES
ISOTOPES
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
NUCLEI
PHYSICS
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
VARIATIONS
YEARS LIVING RADIOISOTOPES