A front-end electronics card comprising a high Gain/High bandwidth amplifier and a fast discriminator for time-of-flight measurements

被引:34
|
作者
Ciobanu, Mircea
Schuettauf, Andreas
Cordier, Evervard
Herrmann, Norbert
Hildenbrand, Klaus D.
Kim, Young Jin
Leifels, Yvonne
Marquardt, Michael
Kis, Mladen
Koczon, Piotr
Lopez, Xavier
Petrovici, Mihai
Weinert, Joachim
Zhang, Xue Jing
机构
[1] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany
[2] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany
[3] NIPNE Bucharest, Bucharest 76900, Romania
关键词
ASIC; CBM; fast amplifier-discriminator; FOPI; resistive plate chambers; time of flight;
D O I
10.1109/TNS.2007.903186
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
During the development of the Multi-Strip Multi-Gap Resistive Plate Chambers (MMRPCs) for the Time-of-Flight (ToF) upgrade of the FOPI detector system, we have designed different versions of the Front-End Electronics (FEE). The signals from a MMRPC are read out on each side of the anode strips by an amplifier followed by a leading-edge discriminator. They are digitized in a Time-to-Amplitude Converter (TAC) followed by a Charge-to-Digital Converter (QDC). These counters are designed to provide a ToF resolution below sigma(t) <= 60 ps requiring an amplifier-discriminator stage with an intrinsic electronic resolution below sigma(t(FEE)) <= 20 ps. We describe the design steps of the FEE-card from a 4-channel version (FEE1) for the R&D phase to the final 16-channel card (FEE5) for the readout of 4800 channels of the total detector array. Through these design steps we have kept the following key characteristics: Low noise sigma(n) <= 25 mu V RMS (to the amplifier input), high gain (200) and a high bandwidth (1 GHz).
引用
收藏
页码:1201 / 1206
页数:6
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