Implementation and performance of the electronics and computing system of the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA)

Zimmermann, Ralf; Anderson, Leticia; Doering,; Joseph, Joseph; Lionberger,; Stezelberger,; Yaver,

doi:10.1109/nssmic.2011.6154119

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…The energy, leading edge and constant fraction discrimination and pole-zero correction will be done in real time by the FPGA. For details on this processing refer to [2]. A CPU interfaces with the rest of the data acquisition system (DAQ) through an internet port and, most likely, will be running a real time operating system such as Linux RT.…”

Section: Detector Mounted Digitizationmentioning

confidence: 99%

Development of next-generation nuclear physics integrated readout electronics for GRETINA

Zimmermann

Abgrall

Bantel

et al. 2013

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)

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Advances in nuclear structure studies using gammaray spectroscopy are being driven by large-volume, electricallysegmented germanium detectors such as the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA) and, in the future, GRETA. GRETINA employs 28 close-packed high-purity germanium detectors with 36 segments each assembled on a support structure covering 1-π π π π of the target position. GRETA will use the same type of detectors as GRETINA and it will cover the full 4-π π π π. To fully realize the potential of these detectors in terms of energy and position resolution, event rate and usability, a next-generation integrated readout electronics system is required with an emphasis on channel density, data throughput, low noise, low power and testability. Addressing these areas of research will have a positive impact in these large spectrometer arrays. The present research includes (a) the design and characterization of charge sensitive amplifier application specific integrated circuit (ASIC) for smaller dimension, lower noise and power dissipation, (b) design of a detector-mounted, low-power small form factor signal digitization to address issues in the analog-to-digital (ADC) linearity and to reduce the cable plant, including the design and characterization of a high speed ADC ASIC and (c) strategies to filter the microphonic noise using adaptive filtering. In this paper we will report the status of this research. Also, observe that although the target of this research is GRETINA, these approaches could be used in other Nuclear Science experiments.

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Section: Detector Mounted Digitizationmentioning

confidence: 99%

Development of next-generation nuclear physics integrated readout electronics for GRETINA

Zimmermann

Abgrall

Bantel

et al. 2013

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)

View full text Add to dashboard Cite

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A digital data acquisition system for the detectors at gammasphere

Anderson

David

Alcorta

et al. 2012

2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)

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A new data acquisition system for experiments using the Gammasphere detector array and associated detectors including the double-sided silicon strip detector (DSSD) is under development. Waveform digitization and triggering hardware identical to that developed for GRETINA has been procured and interfaced to the both the existing Gammasphere and DSSD detectors to provide significantly increased data throughput and increased event rates. A new parasitic signal connection and cable plant provides the ability to simultaneously measure the same events using both the old and new systems. A triggering interface module has been manufactured that connects the Gammasphere trigger and clock to the new system. A second digital data acquisition system has been attached to the DSSD detector located downstream from Gammasphere. The trigger systems of Gammasphere, Digital Gammasphere and Digital DSSD have successfully synchronized the clocks of all three data acquisition systems demonstrating timestamp correlation across multiple detector systems. New firmware for the digitizer modules specific to the signals provided by the Gammasphere detector has been developed and is currently being tested in situ to directly compare the energy resolution of the two data acquisition systems. We describe the system as implemented and show test results to date, where significantly faster event processing rates have been obtained with nearly equivalent energy resolution.

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Implementation and performance of the electronics and computing system of the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA)

Cited by 2 publications

References 8 publications

Development of next-generation nuclear physics integrated readout electronics for GRETINA

Development of next-generation nuclear physics integrated readout electronics for GRETINA

A digital data acquisition system for the detectors at gammasphere

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