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)
