Speaker
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
