Development of low-energy X-ray detectors using LGAD sensors

被引：26

作者：

Andra, Marie ^{[1
]}

Zhang, Jiaguo ^{[1
]}

Bergamaschi, Anna ^{[1
]}

Barten, Rebecca ^{[1
]}

Borca, Camelia ^{[1
]}

Borghi, Giacomo ^{[2
]}

Boscardin, Maurizio ^{[2
]}

Busca, Paolo ^{[3
]}

Bruckner, Martin ^{[1
]}

Cartiglia, Nicolo ^{[4
]}

Chiriotti, Sabina ^{[1
]}

Dalla Betta, Gian-Franco ^{[5
]}

Dinapoli, Roberto ^{[1
]}

Fajardo, Pablo ^{[3
]}

Ferrero, Marco ^{[4
]}

Ficorella, Francesco ^{[2
]}

Frojdh, Erik ^{[1
]}

Greiffenberg, Dominic ^{[1
]}

Huthwelker, Thomas ^{[1
]}

Lopez-Cuenca, Carlos ^{[1
]}

Meyer, Markus ^{[1
]}

Mezza, Davide ^{[1
]}

Mozzanica, Aldo ^{[1
]}

Pancheri, Lucio ^{[5
]}

Paternoster, Giovanni ^{[2
]}

Redford, Sophie ^{[1
]}

Ruat, Marie ^{[3
]}

Ruder, Christian ^{[1
]}

Schmitt, Bernd ^{[1
]}

Shi, Xintian ^{[1
]}

Sola, Valentina ^{[4
]}

Thattil, Dhanya ^{[1
]}

Tinti, Gemma ^{[1
]}

Vetter, Seraphin ^{[1
]}

机构：

[1] Paul Scherrer Inst, Forschungsstr 111, CH-5232 Villigen, Switzerland

[2] Fdn Bruno Kessler, Via Sommar 18, I-38123 Trento, Italy

[3] European Synchrotron Radiat Facil, Grenoble, France

[4] INFN Torino, Via Pietro Giuria 1, I-10125 Turin, Italy

[5] Univ Trento, Via Sommar 9, I-38123 Trento, Italy

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2019年 / 26卷

关键词：

hybrid detectors; silicon detectors; low gain avalanche detectors; single photon counting; PHOTODIODES; SILICON; PILATUS; NOISE;

D O I：

10.1107/S1600577519005393

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Recent advances in segmented low-gain avalanche detectors (LGADs) make them promising for the position-sensitive detection of low-energy X-ray photons thanks to their internal gain. LGAD microstrip sensors fabricated by Fondazione Bruno Kessler have been investigated using X-rays with both charge-integrating and single-photon-counting readout chips developed at the Paul Scherrer Institut. In this work it is shown that the charge multiplication occurring in the sensor allows the detection of X-rays with improved signal-to-noise ratio in comparison with standard silicon sensors. The application in the tender X-ray energy range is demonstrated by the detection of the sulfur K-alpha and K-beta lines (2.3 and 2.46keV) in an energy-dispersive fluorescence spectrometer at the Swiss Light Source. Although further improvements in the segmentation and in the quantum efficiency at low energy are still necessary, this work paves the way for the development of single-photon-counting detectors in the soft X-ray energy range.

引用

页码：1226 / 1237

页数：12

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