Adamczewski-Musch, J.

Arend, A.

Bergmann, C.

Emschermann, D.

Garcia, C.

Heine, N.

Linev, S.

Morhardt, T.

Pauly, C.

Petrics, M.

Petrovici, M.

Verhoeven, W.

Wessels, J. P.

GSI Repository

Common CBM beam test of the RICH, TRD and TOF subsystems at theCERN PS T9 beam line in 2012 ∗D. Emschermann1, J. Adamczewski-Musch2, A. Arend3, C. Bergmann1, C. Garcia4, N. Heine1,S. Linev2, T. Morhardt2, C. Pauly5, M. Petris¸6, M. Petrovici6, W. Verhoeven1, and J. P. Wessels11Institut fu¨r Kernphysik, Mu¨nster, Germany; 2GSI, Darmstadt, Germany; 3Institut fu¨r Kernphysik, Frankfurt/M,Germany; 4IRI, Frankfurt/M, Germany; 5Bergische Universita¨t Wuppertal, Germany; 6NIPNE, Bucharest, RomaniaA common beam test of the CBM Ring ImagingCHerenkov (RICH), Transition Radiation Detector (TRD)and Time Of Flight (TOF) subsystems was performed atthe CERN Proton Synchrotron (PS) accelerator in Octo-ber/November 2012. The measurements were carried outat the T9 beam line in a mixed beam of electrons and pi-ons with momenta from 2 to 10 GeV/c. In addition tothe above mentioned detectors, the setup consisted of: twoCherenkov detectors, two fiber-trackers, beam trigger scin-tillators and a lead-glass calorimeter. The first fiber-trackerwas placed at the upstream end of the setup, followed by alarge volume RICH prototype, 8 real-size TRD prototypes,2 TOF detectors and finally the second fiber-tracker at thedownstream end, see Figure 1.BeamTRD PrototypesTRBnXYTER Münster BucharestSpadic v0.3/v1.0 FASPFrankfurtSpadic v0.31311 12 21 22 23 31 32RICHMPCMAPMTCherenkov1 2version 0.2 by DECBM@CERN PS/T9 setup 2012Si1Drift    2012−RDrift    2012−NDrift    2012−JDrift    444/12Drift   444 aDrift   444 bAnode  55/2012Anode  44/2012RPCRPC 4 cellsTOFPb−glass1 2FT FTFigure 1: Setup of CBM in the PS/T9 beam line in 2012.The RICH prototype [1] was based on a mirror focusingsetup with CO2 gas as radiator. The photon camera wascomposed of 4 micro channel plate (MCP) detectors plus20 Hamamatsu multi-anode photo-multipliers (MAPMTs).Two concurrent approaches to readout the RICH camerawere tested: the traditional trigger-less nXYTER front-endas well as a free streaming approach based on the HADESTrigger and Readout Board (TRB3).The TRD laboratories in Mu¨nster [2], Bucharest [3],[4]and Frankfurt [6],[7] have built real-size (59×59 cm 2) de-tector modules based on MWPC technology with cathodepad readout. The large size of the TRDs has triggered in-novative developments to stabilize the entrance window tothe gas volume, while minimizing the loss of transitionradiation between the radiator and the detection volume.∗Work supported by BMBF, EU-FP7/HP3 Grant No. 283286 andNASR/CAPACITATI contract no.179The readout of the Bucharest prototypes was based on theFast Analog Signal Processor (FASP) ASIC, either digi-tized in a VME-based MADC32, or using free streamingMAXIM [5] based converters. The signal processing onthe TRD modules from Mu¨nster and Frankfurt was per-formed with the SPADIC v0.3 from 2011. A TRD proto-type from Mu¨nster served as platform to compare the per-formance of the FASP, the SPADIC v0.3 and the recentlydeveloped SPADIC v1.0 [8],[9]. The latter reads out 32channels in self-triggered mode and implements the CBM-net protocol on the ASIC. The TRD test program consistedof a systematic study of different radiator prototypes with aXe(80%)+CO2(20%) gas mixture in the detection volume,as well as beam momentum and high voltage scans.Bucharest completed the setup with a segmented TOFprototype, consisting of 4 partially overlapping RPC cells,combined with a single RPC cell reference TOF prototypefrom 2011. These 2 TOF modules were again tested using aC2F4H2(90%)+SF6(5%)+iso-C4H10(5%) gas mixture al-lowing for fast signal generation.All prototypes under test were read out in a common hy-brid data acquisition system based on MBS and DABC.References[1] S. Reinecke et al., “Overview RICH prototype beamtest2012 at CERN-PS”, CBM Progress Report 2012[2] C. Bergmann et al., “Test of Mu¨nster CBM TRD prototypesat the CERN PS/T9 beam line”, GSI Scientific Report 2012[3] M. Petris¸ et al., “e/π identification and position resolutionof high granularity TRD prototype based on MWPC”, GSIScientific Report 2012[4] M. Tarzila et al., “Two dimension position sensitive real sizeCBM-TRD protype”, GSI Scientific Report 2012[5] F. Constantin et al., “FPGA Based Free Running Mode Ac-quisition for High Counting Rate TRD”, GSI Scientific Re-port 2012[6] E. Hellba¨r et al., “Construction and simulations of full-sizeCBM-TRD prototypes without drift region”, GSI ScientificReport 2012[7] P. Dillenseger et al., “In-beam performance studies of thefirst full-size CBM-TRD prototypes developed in Frank-furt”, GSI Scientific Report 2012[8] T. Armbruster et al., “SPADIC 1.0 - a Self-triggered Ampli-fier/Digitizer ASIC for CBM-TRD”, CBM Progress Report2012[9] C. Garcia et al., “Beamtest results of the CBM TRD featureextraction using SPADIC v1.0”, GSI Scientific Report 2012GSI SCIENTIFIC REPORT 2012 PHN-NQM-EXP-4069

Common CBM beam test of the RICH, TRD and TOF subsystems at the CERN PS T9 beam line in 2012

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Common CBM beam test of the RICH, TRD and TOF subsystems at the CERN PS T9 beam line in 2012

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