An Advanced Preamplifier for Highly Segmented Germanium Detectors

Pullia, A.; Zocca, F.; Pascovici, G.

doi:10.1109/tns.2006.880402

Cited by 30 publications

(11 citation statements)

References 9 publications

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“…The output signals of the HPGe detectors are simultaneously read out by advanced charge-sensitive preamplifiers employing a fast-reset technique for dead time and dynamic range optimization [6][7]. This technique consists on a fast discharge of the pole-zero capacitance when the preamplifier output signal is larger than a programmable threshold.…”

Section: Preamplifiers and Digitizersmentioning

confidence: 99%

Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

Barrientos

Bellato

Bazzacco

et al. 2015

IEEE Trans. Nucl. Sci.

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In this work we present the architecture and results of a fully digital Front End Electronics (FEE) read out system developed for the GALILEO array. The FEE system, developed in collaboration with the Advanced Gamma Tracking Array (AGATA) collaboration, is composed of three main blocks: preamplifiers, digitizers and preprocessing electronics. The slow control system contains a custom Linux driver, a dynamic library and a server implementing network services. This work presents the first results of the digital FEE system coupled with a GALILEO germanium detector, which has demonstrated the capability to achieve an energy resolution of 1.53‰ at an energy of 1.33 MeV, similar to the one obtained with a conventional analog system. While keeping a good performance in terms of energy resolution, digital electronics will allow to instrument the full GALILEO array with a versatile system with high integration and low power consumption and costs

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Section: Preamplifiers and Digitizersmentioning

confidence: 99%

Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

Barrientos

Bellato

Bazzacco

et al. 2015

IEEE Trans. Nucl. Sci.

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“…To do so, let's calculate the eigenvalues and the eigenvectors. After straightforward calculations (3) can be rewritten in the following form: (4) where , , and ,are equal to:…”

Section: Study Of the Impedancementioning

confidence: 99%

Study of the effects of parasitic capacitance on large integrated feedback resistors for charge-sensitive preamplifiers

Capra

Pullia

2014

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

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A study of the impedance and noise of an integrated poly-silicon resistor with distributed capacitive coupling to bulk is presented. The system is analyzed by using a closed-form calculus which produces non approximated results. In particular, deviations from ideal conditions are shown when that kind of resistor is used as a continuous-discharge feedback device for charge-sensitive preamplifiers. The effect of using a feedback resistor with capacitive coupling to bulk is an evident deformation of the shape of the signals. An innovative technique is presented, which allows overcoming the problem of the distortions in the CSP output signals. Several n-wells are placed under the resistor and driven with an auxiliary low-impedance divider which minimizes the voltage variations on the plates of the parasitic capacitors. In this way the pulses provided by the charge-sensitive preamplifiers show again a clean R-C exponential-decay shape and are so optimized for signal shaping and adequate for high-resolution spectroscopy.

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“…The central bore of 5 mm radius is drilled from the back along the axis of the cylinder till the depth of 13 mm from the front surface of the crystal. The cryostat has 37 cold FETs for the 36 segments and the central core signals and the corresponding preamplifiers [28][29][30]. As shown in Fig.…”

Section: Segmented Detector Description and Experimental Setupmentioning

confidence: 99%

Characterisation of a symmetric AGATA detector using the imaging scanning technique

Goel

Domingo‐Pardo

Habermann

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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An Advanced Preamplifier for Highly Segmented Germanium Detectors

Cited by 30 publications

References 9 publications

Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

Study of the effects of parasitic capacitance on large integrated feedback resistors for charge-sensitive preamplifiers

Characterisation of a symmetric AGATA detector using the imaging scanning technique

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