TH1C03
IMP/CAS, Lanzhou, People’s Republic of China
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TH1C03 |
The Development of a 128-Channel Ultra-Low Noise Trans-Impedance Amplifier System | ||||
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| A new 128-channel readout electronics system is designed for the bunch-by-bunch profile measurement of High-Intensity Heavy-ion Accelerator Facility (HIAF), and Booster Ring (BRing). This system consists of 128 ultra-low noise analog front-ends (AFE), 16 8-channel 60 Msps simultaneous sampling analog-digital conversions (ADC), 8 Kintex-7 field-programmable gate arrays (FPGA), and a Zynq FPGA. It is capable of monitoring weak current signals of 25 pA¿1.8 ¿A. The Kintex-7 FPGA is an intermediate buffer stage, designed to decode the ADC’s serial output data, and to perform digital signal processing algorithms. Finally, the Zynq FPGA performs data aggregation, beam profile fitting, and data interaction with the host computer. During offline tests, the effective number of bits (ENOB) is better than 12 bits, and the nonlinearity is less than 0.2% on a full scale. Finally, the system is deployed for the beam profile measurement. The obtained peak value shows a good proportionality with the beam intensity increment, and all the electronics’ properties achieve reasonable and excellent performance. | |||||
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Slides TH1C03 [3.732 MB] | ||||
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