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The CaloRIC ASIC: Signal Processing for High Granularity Calorimeter

Abstract : A readout ASIC called CaloRIC, has been developed to fulfil the signal processing requirements for the Silicon-Tungsten (Si-W) electromagnetic calorimeter of the International Linear Collider (ILC). This ASIC performs the complete processing of the signal delivered by the Si-PIN diode of the detector: charge sensitive amplification, shaping, analog memorization and digitization. Measurements show a global integral non-linearity better than 0.2% for low energy particles, and limited to 2% for high energy particles. The measured Equivalent Noise Charge (ENC) is evaluated at 0.6 fC, which corresponds to 1/6 times the signal released by a Minimum Ionizing Particle (MIP). With the timing sequence of the ILC, the power consumption of the complete channel is evaluated at 43 mu W using a power pulsing. A new ASIC (CaloRIC 4ch) with four improved readout channels has been designed and is ready for manufacturing.
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Submitted on : Wednesday, February 27, 2013 - 3:35:18 PM
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L. Royer, S. Manen, X. Soumpholphakdy, J. Bonnard, Pascal Gay. The CaloRIC ASIC: Signal Processing for High Granularity Calorimeter. Topical Workshop on Electronics for Particle Physics 2012 (TWEPP12), Sep 2012, Oxford, United Kingdom. pp.C02051, ⟨10.1088/1748-0221/8/02/C02051⟩. ⟨in2p3-00795199⟩



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