10th International Workshop on Ring Imaging Cherenkov Detectors

Status of the CBM- and HADES RICH projects at GSI/FAIR

3 Aug 2018, 16:35

25m

Blue Hall (Russian Academy of Sciences)

oral presentation [20+5 min] Novel Cherenkov imaging techniques for future experiments Novel Cherenkov imaging techniques for future experiments

Speaker

Christian Pauly (Wuppertal university)

Description

The HADES RICH detector at GSI/FAIR is currently being upgraded using Hamamatsu H12700 photomultipliers for Cherenkov photon detection. The same sensors will be also used by the CBM RICH detector, which is being built at FAIR-SIS100. A total of 1100 already delivered MAPMTs have been individually measured with respect to sensitivity, gain, dark current, and afterpulsing.
The test data prove the constant production quality, and allow to group the sensors into readout modules of 6 PMTs each.
A new FPGA-TDC based electronic readout chain has been developed and provides excellent timing precision and high rate capability. Core element is the 32ch DIRICH front-end module, combining discrimination, digitization, and data handling on a single FPGA.
The new readout chain has been characterized in detail during a test beam at COSY, FZ Jülich, using a small Cherenkov prototype detector. Based on these results, the mass production of all eletronic modules for the HADES upgrade has started and is presently ongoing.

In the presentation, we give an overview on the upgrade status of the HADES RICH detector, and show the progress of the ongoing CBM RICH detector development.

• supported by BMBF grants 05P15PXFCA, 05P15RGFCA, and GSI

Presentation materials

talk_RICH2018_CP_03082018.pdf