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A Low-Power Silicon-Photomultiplier Readout ASIC for the CALICE Analog Hadronic Calorimeter

Yuan, Zhenxiong

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The future e + e − collider experiments, such as the international linear collider, provide precise measurements of the heavy bosons and serve as excellent tests of the underlying fundamental physics. To reconstruct these bosons with an unprecedented resolution from their multi-jet final states, a detector system employing the particle flow approach has been proposed, requesting calorimeters with imaging capabilities. The analog hadron calorimeter based on the SiPM-on-tile technology is one of the highly granular candidates of the imaging calorimeters. To achieve the compactness, the silicon-photomultiplier (SiPM) readout electronics require a low-power monolithic solution. This thesis presents the design of such an application-specific integrated circuit (ASIC) for the charge and timing readout of the SiPMs. The ASIC provides precise charge measurement over a large dynamic range with auto-triggering and local zero-suppression functionalities. The charge and timing information are digitized using channel-wise analog-to-digital and time-to-digital converters, providing a fully integrated solution for the SiPM readout. Dedicated to the analog hadron calorimeter, the power-pulsing technique is applied to the full chip to meet the stringent power consumption requirement. This work also initializes the commissioning of the calorimeter layer with the use of the designed ASIC. An automatic calibration procedure has been developed to optimized the configuration settings for the chip. The new calorimeter base unit with the designed ASIC has been produced and its functionality has been tested.

Item Type: Dissertation
Supervisor: Schultz-Coulon, Prof. Dr. Hans-Christian
Place of Publication: Heidelberg
Date of thesis defense: 15 July 2020
Date Deposited: 20 Jul 2020 14:01
Date: 2020
Faculties / Institutes: The Faculty of Physics and Astronomy > Kirchhoff Institute for Physics
Subjects: 530 Physics
Controlled Keywords: Elektronik, Kalorimetrie, Hochenergiephysik
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