Resistive micromegas is now a mature technology for High Energy Physics experiments. In the ATLAS experiment at CERN 128 multilayers large size (â¼ 2 m2) micromegas chambers will be employed in the upgrade of the Muon Spectrometer (2019/2020), and will operate at moderate hit rate up to about 15 kHz/cm2 during the phase of High-Luminosity-LHC. Future upgrades and detectors at future accelerators will require operation at rates up to three orders of magnitude higher. In this paper we present the development of micromegas with a small-pads readout (few mm2 in size) aiming at precision tracking in high rate environment without efficiency loss up to a few MHz/cm2. The detector layout and the construction technique will be reviewed, along with the first results obtained with radioactive sources. Outlooks on future developments will also be illustrated.
Alviggi, M., Biglietti, M., Canale, V., Della Pietra, M., Di Donato, C., Franchino, S., et al. (2017). Small-pads resistive micromegas. JOURNAL OF INSTRUMENTATION, 12(3), C03077-C03077 [10.1088/1748-0221/12/03/C03077].
Small-pads resistive micromegas
Petrucci, F.;
2017-01-01
Abstract
Resistive micromegas is now a mature technology for High Energy Physics experiments. In the ATLAS experiment at CERN 128 multilayers large size (â¼ 2 m2) micromegas chambers will be employed in the upgrade of the Muon Spectrometer (2019/2020), and will operate at moderate hit rate up to about 15 kHz/cm2 during the phase of High-Luminosity-LHC. Future upgrades and detectors at future accelerators will require operation at rates up to three orders of magnitude higher. In this paper we present the development of micromegas with a small-pads readout (few mm2 in size) aiming at precision tracking in high rate environment without efficiency loss up to a few MHz/cm2. The detector layout and the construction technique will be reviewed, along with the first results obtained with radioactive sources. Outlooks on future developments will also be illustrated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
