Characterization and Calibration of Large Area Resistive Strip Micromegas Detectors

Lösel, Philipp (2016): Characterization and Calibration of Large Area Resistive Strip Micromegas Detectors. In: Nuclear instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, Bd. 824: S. 551-553

Abstract

Resistive strip Micromegas detectors have been tested extensively as small detectors of about 10 x 10 cm(2) in size and they work reliably at high rates of 100 kHz/cm(2) and above. Tracking resolution well below 100 pm has been observed for 100 GeV muons and pions. Micromegas detectors are meanwhile proposed as large area muon precision trackers of 2-3 m(2) in size. To investigate possible differences between small and large detectors, a 1 m(2) detector with 2048 resistive strips at a pitch of 450 mu m was studied in the LMU Cosmic Ray Measurement Facility (CRMF) using two 4 x 2.2 m(2) large Monitored Drift Tube (MDT) chambers for cosmic muon reference tracking. A segmentation of the resistive strip anode plane in 57.6 mm x 93 mm large areas has been realized by the readout of 128 strips with one APV25 chip each and by eleven 93 mm broad trigger scintillators placed along the readout strips. This allows for mapping of homogeneity in pulse height and efficiency, determination of signal propagation along the 1 m long anode strips and calibration of the position of the anode strips. (C) 2015 Elsevier B.V. All rights reserved.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0168-9002
• Sprache: Englisch