Novel readout chain for imaging calorimetery

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Novel concept of ASIC readout developed for Electromagnetic Calorimeter base on Silicon pixel sensor and tungsten absorber. The performance of multi-channel and dual gain ASIC tested with injected charge and 3 GeV electron beam. Obtained results confirmed the ability of ASIC .

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Novel readout chain for imaging calorimetery

  1. 1. Status of ASIC readout for Electromagnetic Calorimeter Elmaddin Guliyev Laboratoire Leprince-Ringuet, Ecole Polytechnique, Palaiseau, France for the CALICE CollaborationInternational Linear Collider, the experiment for electron-positron at TeV Signal processing for ASICSKIROC- analog waveform at the output of theScale, will allow to perform crucial study such as; Higgs boson, super- pre-amplifier andsymmetric particles, physics of top quark ... that at the output of the shaping amplifier were observed using the monitor lines by injecting a charge. For the charge (energy) information the generated signal falling edge positioned 1 in to the maximum ofParticle Flow Algorithm signal out of shaperrequires a fine granularity unit.Calorimeter.The Electromagnetic The hold signal canCalorimeter (ECAL) is a help to digitize thecrucial part of ILD. the amplitude of analog waveform as a energy information, baselineECAL detector uses to study the noise level.tungsten layer as a absorber and developed 18x18 cm 2 HAMAMATSU silicon 2pixel (size 5x5 mm ) sensor will be employed as a light sensors.Test setup with single ECAL prototype – consist of 4 ASIC, silicon pixel Results – is measurement of noise level, linearity with injecting charge andsensor, detector interface (DIF), Link data aggregator (LDA) and clock 3 GeV electron energy.control card CCC.DIF - communication the ASIC with data acquisition (DAQ), controllingLDA - aggregate the output of DIF and derive the signal to PCCCC - start/stop DAQASIC readout – concept developed due to requirement of physics program.The requirements are:* Small size* Low noise* Low power* Large dynamic CONCLUSIONS range* Large number  Prototype for high granularity ECAL developed readout channels  The feature of ASIC performed with injected charge and electron beamPrototype SKIROC2  Achieved signal to noise ratio is satisfied64 channel  Noise level is almost same for all the channel (in 4 ASIC) and there isDual gainDynamic range: no correlation observed.0.5 – 2000 MIP (minimum ionizing particle)Reference:[1] M.Thomson:detectors for a future Lepton Collider : cern 18/2/2010[2] omega.in2p3.fr

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