MICROMEGAS chambers for hadronic calorimetry at a future linear collider

Prototypes of MICROMEGAS chambers, using bulk technology and analog readout, with 1x1cm2 readout segmentation have been built and tested. Measurements in Ar/iC4H10 (95/5) and Ar/CO2 (80/20) are reported. The dependency of the prototypes gas gain versus pressure, gas temperature and amplification gap...

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Detalles Bibliográficos
Autores principales: Adloff, C., Attie, D., Blaha, J., Cap, S., Chefdeville, M., Colas, P., Dalmaz, A., Drancourt, C., Espargiliere, A., Gaglione, R., Gallet, R., Geffroy, N., Giomataris, I., Jaquemier, J., Karyotakis, Y., Peltier, F., Prast, J., Vouters, G.
Lenguaje:eng
Publicado: 2009
Materias:
physics.ins-det
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/4/11/P11023
http://cds.cern.ch/record/1207472
Descripción
Sumario:Prototypes of MICROMEGAS chambers, using bulk technology and analog readout, with 1x1cm2 readout segmentation have been built and tested. Measurements in Ar/iC4H10 (95/5) and Ar/CO2 (80/20) are reported. The dependency of the prototypes gas gain versus pressure, gas temperature and amplification gap thickness variations has been measured with an 55Fe source and a method for temperature and pressure correction of data is presented. A stack of four chambers has been tested in 200GeV/c and 7GeV/c muon and pion beams respectively. Measurements of response uniformity, detection efficiency and hit multiplicity are reported. A bulk MICROMEGAS prototype with embedded digital readout electronics has been assembled and tested. The chamber layout and first results are presented.

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