Digital synthesis of pulse shapes in real time for high resolution radiation spectroscopy

Jordanov, Valentin T.; Knoll, G.F.

doi:10.1016/0168-9002(94)91011-1

Cited by 323 publications

(158 citation statements)

References 7 publications

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“…q(t) is subsequently reshaped with a 2 μs triangular, or moving average, filter (see e.g. [28]). The reshaped waveform is then analyzed with a peak-search algorithm to determine the presence of any additional signals.…”

Section: Waveform Unshapingmentioning

confidence: 99%

Improved measurement of the2νββhalf-life of136Xe with the EXO-200 detector

Albert¹,

Auger²,

Auty³

et al. 2014

Phys. Rev. C

187

207

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We report on an improved measurement of the 2νββ half-life of 136 Xe performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data analysis methods used for double-beta decay searches with EXO-200, while emphasizing those directly related to the present measurement. The 136 Xe 2νββ half-life is found to be T 2νββ 1/2 = 2.165 ± 0.016(stat) ± 0.059(sys) · 10 21 years. This is the most precisely measured half-life of any 2νββ decay to date.

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Section: Waveform Unshapingmentioning

confidence: 99%

Improved measurement of the2νββhalf-life of136Xe with the EXO-200 detector

Albert¹,

Auger²,

Auty³

et al. 2014

Phys. Rev. C

187

207

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show abstract

“…TNT2D flash ADCs digitize the germanium crystals preamplifier signals with a sampling rate of 100 MHz over a 14 bit dynamical range. The sampled data are then pipe-line processed using the Jordanov algorithm [16] to generate a trapezoid shape with rise and fall times of 3 µs and a plateau length of 1.5 µs. The TNT2D cards were incorporated into the Total Data Readout data acquisition system [17] with the time stamp being generated on a channel-bychannel basis with a constant-fraction discriminator algorithm.…”

mentioning

confidence: 99%

In-beam spectroscopy with intense ion beams: Evidence for a rotational structure in246Fm

Piot¹,

Gall²,

Dorvaux³

et al. 2012

Phys. Rev. C

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“…It was initially described over 40 years ago and has well understood properties [95]. The implementation used for this work is based on the implementation described by Jordanov et al [96]. An example output of the trapezoidal filter along with the input pulse is shown in figure 6.4.…”

Section: Digital Filteringmentioning

confidence: 99%

Development of Metallic Magnetic Calorimeters for Nuclear Safeguards Applications

Bates

2015

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Many nuclear safeguards applications could benefit from high-resolution gamma-ray spectroscopy achievable with metallic magnetic calorimeters. This dissertation covers the development of a system for these applications based on gamma-ray detectors developed at the University of Heidelberg. It demonstrates new calorimeters of this type, which achieved an energy resolution of 45.5 eV full-width at half-maximum at 59.54 keV, roughly ten times better than current state of the art high purity germanium detectors. This is the best energy resolution achieved with a gamma-ray metallic magnetic calorimeter at this energy to date. In addition to demonstrating a new benchmark in energy resolution, an experimental system for measuring samples with metallic magnetic calorimeters was constructed at Lawrence Livermore National Laboratory. This system achieved an energy resolution of 91.3 eV full-width at half-maximum at 59.54 keV under optimal conditions. Using this system it was possible to characterize the linearity of the response, the count-rate limitations, and the energy resolution as a function of temperature of the new calorimeter. With this characterization it was determined that it would be feasible to measure 242 Pu in a mixed isotope plutonium sample. A measurement of a mixed isotope plutonium sample was performed over the course of 12 days with a single two-pixel metallic magnetic calorimeter. The relative concentration of 242 Pu in comparison to other plutonium isotopes was determined by direct measurement to less than half a percent accuracy. This is comparable with the accuracy of the best-case scenario using traditional indirect methods. The ability to directly measure the relative concentration of 242 Pu in a sample could enable more accurate accounting and detection of indications of undeclared activities in nuclear safeguards, a better constraint on source material in forensic samples containing plutonium, and improvements in verification in a future plutonium disposition treaty.

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Digital synthesis of pulse shapes in real time for high resolution radiation spectroscopy

Cited by 323 publications

References 7 publications

Improved measurement of the2νββhalf-life of136Xe with the EXO-200 detector

Improved measurement of the2νββhalf-life of136Xe with the EXO-200 detector

In-beam spectroscopy with intense ion beams: Evidence for a rotational structure in246Fm

Development of Metallic Magnetic Calorimeters for Nuclear Safeguards Applications

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