Readout Electronics for CEPC Semidigital Hadron Calorimeter Preprototype

Wang, Yu; Liu, Shubin; Feng, C. Q.; Shen, Zhongtao; Zhang, Junbin; Hong, Daojin; Liu, Jianbei; Zhou, Yi

doi:10.1109/tns.2019.2917289

Cited by 4 publications

(1 citation statement)

References 12 publications

(15 reference statements)

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“…Therefore, it is necessary to study the respond of the double-layer GEM prototype to Minimum Ionization Particles (MIPs). A multi-channel readout electronics system [11] based on the MICROROC chip [12] was developed for this study, which consisted of The Front End Board (FEB) and The Data Interface Board (DIF). The MICROROC chip is a 64-channel ASIC with a linear dynamic range from 1 to 500 fC developed for MPGD readout of a DHCAL.…”

Section: Digital Readout Electronics and Cosmic Ray Testmentioning

confidence: 99%

Development of compact micro-pattern gaseous detectors for the CEPC digital hadron calorimeter

et al. 2020

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A: An imaging hadron calorimeter with digital readout (DHCAL) using the micro-pattern gaseous detector (MPGD) technology is one of the hadron calorimeter options for the Circular Electron Positron Collider (CEPC). The sensitive detector of the CEPC DHCAL is required to be compact and highly efficient for MIPs with low hit multiplicity. A double-GEM detector and a resistive WELL (RWELL) detector based on the THGEM technique have been investigated as options for the DHCAL sensitive detector. A 30 cm × 30 cm double-GEM prototype with "3 mm-1 mm-1 mm" structure was built with the self-stretching technique to study the performance of the double-GEM detector for application to the CEPC DHCAL. The double-GEM prototype was read out with the MICROROC chip and tested with cosmic-rays. The results of the test show a detection efficiency higher than 95% and a hit multiplicity of 1.2. Compared with the GEM detector, the RWELL detector is advantageous in minimizing the dead area due to its simple assembly without stretching. In addition, it has a more compact structure than the double-GEM detector thanks to its single-stage gas amplification without any induction gap. A 25 cm × 25 cm RWELL prototype with a resistivie DLC electrode was developed by using the thermal bonding technique. And a fast grounding circuit was designed on its anode PCB to enhance the rate capability of the detector.

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Section: Digital Readout Electronics and Cosmic Ray Testmentioning

confidence: 99%

Development of compact micro-pattern gaseous detectors for the CEPC digital hadron calorimeter

et al. 2020

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Prototype of the readout electronics for the RICH PID detector in the STCF

et al. 2022

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Long-pulse high-performance H-mode plasmas achieved on EAST

et al. 2023

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A record duration of a 310 s H-mode plasma (H98y2 ∼ 1.3, ne/nGW ∼ 0.7, fBS > 50%) has been recently achieved on experimental advanced superconducting tokamak (EAST) with metal walls, exploiting the device's improved long-pulse capabilities. The experiment demonstrates good control of tungsten concentration, core/edge MHD stability, and particle and heat exhaust with an ITER-like tungsten divertor and zero injected torque, establishing a milestone on the path to steady-state long-pulse high-performance scenarios in support of ITER and CFETR. Important synergistic effects are leveraged toward this result, which relies purely on radio frequency (RF) powers for heating and current drive (H&CD). On-axis electron cyclotron heating enhances the H&CD efficiency from lower hybrid wave injection, increasing confinement quality and enabling fully non-inductive operation at high density (ne/nGW ∼ 70%) and high poloidal beta (βP ∼ 2.5). A small-amplitude grassy edge localized mode regime facilitates the RF power coupling to the H-mode edge and reduces divertor sputtering/erosion. The high energy confinement quality (H98y2 ∼ 1.3) is achieved with the experimental and simulated results pointing to the strong effect of Shafranov shift on turbulence. Transport analysis suggests that trapped electron modes dominate in the core region during the record discharge. The detailed physics processes (RF synergy, core-edge integration, confinement properties, etc.) of the steady-state operation will be illustrated in the content. In the future, EAST will aim at accessing more relevant dimensionless parameters to develop long-pulse high-performance plasma toward ITER and CFETR steady-state advanced operation.

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Readout Electronics for CEPC Semidigital Hadron Calorimeter Preprototype

Cited by 4 publications

References 12 publications

Development of compact micro-pattern gaseous detectors for the CEPC digital hadron calorimeter

Development of compact micro-pattern gaseous detectors for the CEPC digital hadron calorimeter

Prototype of the readout electronics for the RICH PID detector in the STCF

Long-pulse high-performance H-mode plasmas achieved on EAST

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