22-29 July 2015
Europe/Vienna timezone

Test of MPGD modules with a large prototype Time Projection Chamber

Jul 24, 2015, 3:45 PM


talk Detector R&D and Data Handling Detector R&D and Data Handling


Deb Sankar Bhattacharya (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))


The International Large Detector (ILD) is one of the detector concepts at the ILC where calorimetry and tracking systems are combined. The tracking system consists of a Silicon vertex detector, forward tracking disks and a large volume Time Projection Chamber (TPC). R&D for a Micro Pattern Gaseous Detector (MPGD) TPC has been carried out within the framework of LC-TPC collaboration. Beam tests have been performed using a Large Prototype, equipped with up to seven identical modules in a 1 T magnetic field at DESY. Results obtained with several technologies (GEM, Resistive Micromegas) will be presented (drift velocity, field distortions, spatial resolution, alignment measurements). Recently a new resistive material, diamond-like carbon, has been tested and compared with carbon-loaded polyimide. Cooling with two-phase CO2 has been applied, leading to stabilize within 0.1 °C the temperature of the electronics below 30 °C.

Primary author

Deb Sankar Bhattacharya (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))

Presentation materials