An FPGA-based automated approach for identification and setting of the single electron response threshold voltage in portable TDCR systems

Sharma, M.K.; Agarwal, Shivam; Kulkarni, M.S.; Kulkarni, D.B.

doi:10.1016/j.nima.2022.167925

Cited by 1 publication

(2 citation statements)

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“…The logic pulses from PIB are fed to the FPB for coincidence analysis. The SDB, under the control of the FPB, facilitates the automatic identification and setting of the single electron response (SER) threshold voltage of the three PMTs [18].…”

Section: System Electronicsmentioning

confidence: 99%

“…The system supports two modes of operations, namely 'SER Mode' and 'Measurement Mode'. In the 'SER Mode', the program on the Raspberry Pi SBC instructs the embedded programme running in the FPGA to acquire the integral spectrums of each PMT, identify the respective SER threshold voltage of each PMT and set the individual SER threshold voltages digitally [18]. In the 'Measurement Mode', the FPGA is instructed to acquire coincidence count and live time data and transmit it to the Raspberry Pi SBC.…”

Section: System Softwarementioning

confidence: 99%

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Development of FPGA-based standalone, portable TDCR system

Sharma,

Agarwal,

Kulkarni

et al. 2023

J. Inst.

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A standalone, lightweight, portable, FPGA-based triple to double coincidence ratio (TDCR) system is developed. The optical chamber of the system is fabricated in a dual, coaxial cylindrical geometry, with the inner cylinder made up of Teflon and the outer one of aluminium. Three square PMTs, each having an active cathode area of 2.3 cm × 2.3 cm, are housed in the optical chamber. The variation in detection efficiency to identify the optimum kB (ionization quenching parameter) value is achieved by changing the vial position vertically with respect to the centre line of the PMTs. The coincidence analyzer implemented in a field programmable gate array (FPGA) transfers the pulse counts and associated parameters in real time to a Raspberry Pi single board computer (SBC). The TDCR algorithm to compute the efficiency is implemented in the SBC. In addition, the SBC is interfaced with a local 7” touchscreen to provide an intuitive graphical user interface (GUI) for operating the standalone instrument. The system performance is validated with 3H and 14C radionuclide standards.

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Section: System Electronicsmentioning

confidence: 99%

Section: System Softwarementioning

confidence: 99%