Simulations using the pulse shape comparison scanning technique on an AGATA segmented HPGe gamma-ray detector

Canditiis, B. De; Duchêne, G.

doi:10.1140/epja/s10050-020-00287-6

Cited by 7 publications

(6 citation statements)

References 29 publications

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“…The measurements described in this work are realized on the S001 AGATA detector unit which is a 36-fold segmented, closed-end, coaxial, n-type HPGe crystal with a tapered hexagonal geometry and a symmetric shape (S-type) [27,28]. The crystal geometry and its segmentation are represented in figure 1 and described in detail in reference [29].…”

Section: S001 Detector Unitmentioning

confidence: 99%

“…The PSCS technique [22,29] allows to characterize the full volume of a position sensitive detector, such as the S001 unit. This is done by irradiating the detector from two different positions with a collimated gammaray source.…”

Section: The Pscs Technique and The Iphc Scanning Tablementioning

confidence: 99%

“…The duplicates are discarded from the list before the mean pulse-shape refinement is applied. This procedure (described in detail in [29]) uses again the pulse-shape comparison to reject the most diverging pulses, with respect to the average pulse, giving a more coherent final selection of events. About 140 pulses are finally selected for each coordinate of the pulse shape database.…”

Section: The χ 2 Algorithmmentioning

confidence: 99%

“…They show a quite large spread, mostly due to single or clusters of points which exhibit large values (as seen in figure 7). These points are mostly concentrated along the segmentation surfaces, where it has been observed [28,29] that the PSCS technique presents some limitations.…”

Section: Comparison Of Databases Of Different Energiesmentioning

confidence: 99%

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Full-volume characterization of an AGATA segmented HPGe gamma-ray detector using a $$^{152}Eu$$ source

et al. 2021

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Scanning tables use collimated gamma-ray sources to perform full volume characterization of position sensitive detectors. One of such tables is hosted at IPHC Strasbourg. It was designed and built within the AGATA collaboration. It exploits the Pulse Shape Comparison Scanning (PSCS) technique to build databases of pulses used to characterize the response of high purity germanium (HPGe) detectors and perform R&D on such crystals. Ultimately, measured databases could be used by the pulse shape analysis (PSA) algorithms employed in AGATA experiments. The table can perform full volume scans of large volume detectors in short times, with a good spatial resolution and at different energies. Lately, the table was upgraded with a new 152 Eu source, which emits gamma rays in cascades of different energies. A scan with such source is performed for the first time. It allows to build different energy databases in one single scan. The present work aims at testing the performances of the PSCS technique with a multienergetic source and verifying some assumptions of the Shockley-Ramo theorem which are at the base of the PSA algorithms used for gamma-ray tracking arrays. Keywords HPGe detectors • Full volume characterization • Pulse Shape Analysis (PSA) • AGATA • Scanning table • 152 Eu source

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Section: S001 Detector Unitmentioning

confidence: 99%

Section: The Pscs Technique and The Iphc Scanning Tablementioning

confidence: 99%

Section: The χ 2 Algorithmmentioning

confidence: 99%

Section: Comparison Of Databases Of Different Energiesmentioning

confidence: 99%

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Full-volume characterization of an AGATA segmented HPGe gamma-ray detector using a $$^{152}Eu$$ source

et al. 2021

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“…This procedure requires very accurate information on the properties of each individual detector, such as the geometry, the space-charge distribution, crystal-axis orientation, cross-talk properties and the response function of the electronics [9][10][11][12][13] and yields a set of simulated signals associated with every point of a 2-mm step grid. Moreover, several groups have been working on the characterization of AGATA detectors with scanning tables [14][15][16][17][18][19][20][21], in order to produce a realistic basis of pulses, independent from simulation assumptions and free of a potential bias introduced by boundary conditions. Following the procedures outlined in Refs.…”

Section: Introductionmentioning

confidence: 99%

Position uncertainties of AGATA pulse-shape analysis estimated via the boostrapping method

Siciliano,

Ljungvall,

Goasduff

et al. 2021

Preprint

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The unprecedented capabilities of state-of-the-art segmented germanium-detector arrays, such as AGATA and GRETA, derive from the possibility of performing pulse-shape analysis. The comparison of the net-and transient-charge signals with databases via grid-search methods allows the identification of the γ-ray interaction points within the segment volume. Their precise determination is crucial for the subsequent reconstruction of the γ-ray paths within the array via tracking algorithms, and hence the performance of the spectrometer. In this paper the position uncertainty of the deduced interaction point is investigated using the bootstrapping technique applied to 60 Co radioactive-source data. General features of the extracted position uncertainty are discussed as well as its dependence on various quantities, e.g. the deposited energy, the number of firing segments and the segment geometry.

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Trends in particle and nuclei identification techniques in nuclear physics experiments

et al. 2022

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Particle identification techniques are fundamental tools in nuclear physics experiments. Discriminating particles or nuclei produced in nuclear interactions allows to better understand the underlying physics mechanisms. The energy interval of these reactions is very broad, from sub-eV up to TeV. For this reason, many different identification approaches have been developed, often combining two or more observables. This paper reviews several of these techniques with emphasis on the expertise gained within the current nuclear physics scientific program of the Italian Istituto Nazionale di Fisica Nucleare (INFN).

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Simulations using the pulse shape comparison scanning technique on an AGATA segmented HPGe gamma-ray detector

Cited by 7 publications

References 29 publications

Full-volume characterization of an AGATA segmented HPGe gamma-ray detector using a $$^{152}Eu$$ source

Full-volume characterization of an AGATA segmented HPGe gamma-ray detector using a $$^{152}Eu$$ source

Position uncertainties of AGATA pulse-shape analysis estimated via the boostrapping method

Trends in particle and nuclei identification techniques in nuclear physics experiments

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