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May 21 – 26, 2017
Beijing International Convention Center
Asia/Shanghai timezone

A Cylindrical GEM Inner Tracker for the BESIII experiment at IHEP

May 23, 2017, 2:18 PM
18m
Room 305C (Beijing International Convention Center)

Room 305C

Beijing International Convention Center

No.8 Beichen Dong Road, Chaoyang District, Beijing P. R. China 100101
oral Gaseous detectors R2-Gaseous detectors(1)

Speaker

Mr Riccardo Farinelli (INFN Sezione di Ferrara)

Description

The Beijing Electron Spectrometer III (BESIII) is a multi-purpose detector that collects data provided by the collision in the Beijing Electron Positron Collider II (BEPCII), hosted at the Institute of High Energy Physics of Beijing. Since the start of its operation, BESIII has collected the world's largest sample of J/psi and psi(2s). Due to the unprecedent luminosity of the BEPCII, the most inner part of the Multilayer Drift Chamber (MDC) is showing aging effects. It has been proposed an replacement based on the new technology of Cylindrical Gas Electron Multipliers (CGEM). The CGEM-IT project will deploy several new features and innovation with respect the other state-of-art GEM detector: the µTPC and analog readout, with time and charge measurements will allow to reach the 130 µm spatial resolution in 1 Tesla magnetic field requested by the BESIII collaboration; the Rohacell, a PMI foam, will give solidity to cathode and anode, with very low impact on material budget; the jagged anode will allow to reduce the interstrip capacitance. In this presentation, an update of the status of the project will be presented, with a particular focus on the results with planar and cylindrical prototypes with cosmic rays and test beams data. These results are beyond the state of the art for GEM technology in magnetic field.The CGEM-IT project has been founded by the European Commission in the action H2020-RISE-MSCA-2014.

Summary

In this presentation, an update of the status of the project will be presented, with a particular focus on the results with planar and cylindrical prototypes with cosmic rays and test beams data. These results are beyond the state of the art for GEM technology in magnetic field.The CGEM-IT project has been founded by the European Commission in the action H2020-RISE-MSCA-2014.

Primary author

Mr Riccardo Farinelli (INFN Sezione di Ferrara)

Presentation materials