Low energy measurements with Helium Micromegas μTPC

The measurement of the ionization produced by particles in a medium presents a great interest in several fields from metrology to particule physics and cosmology. The ionization quenching factor is defined as the fraction of energy released by ionisation by a recoil in a medium compared with its kin...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 179; no. 1; p. 012012
Main Authors Guillaudin, O, Mayet, F, Grignon, C, Koumeir, C, Santos, D, Colas, P, Giomataris, I
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2009
Subjects
Cosmology
Gas mixtures
Helium
Ionization
Kinetic energy
Physics
Quenching
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Summary:The measurement of the ionization produced by particles in a medium presents a great interest in several fields from metrology to particule physics and cosmology. The ionization quenching factor is defined as the fraction of energy released by ionisation by a recoil in a medium compared with its kinetic energy. At low energy, in the range of a few keV, the ionization fall rapidly and systematic measurement are needed. We have developped an experimental setup devoted to the measurement of low energy (keV) ionization quenching factor for the MIMAC project. The ionization produced in the gas has been measured with a Micromegas detector filled with Helium gas mixture.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/179/1/012012