<abstract xmlns="http://www.w3.org/1999/xhtml">The paper presents comparison of two silicon drift detectors (SDD), one made by Amptek, USA, and the second one by PNDetector, Germany, which are considered for a soft X-ray diagnostic system for W7-X. The sensitive area of the first one is 7 mm2 × 450 μm and the second one is 10 mm2 × 450 μm. The first detector is cooled by a double-stage Peltier element, while the second detector is cooled by single-stage Peltier element. Each one is equipped with a field-effect transistor (FET). In the detector from Amptek, the FET is mounted separately, while in the detector from PNDetector, the FET is integrated on the chip. The nominal energy resolution given by the producers of the first and the second one is 136 eV@5.9 keV (at -50°C) and 132 eV@5.9 keV (at -20°C), respectively. Owing to many advantages, the investigated detectors are good candidates for soft X-ray measurements in magnetic confinement devices. They are suitable for soft X-ray diagnostics, like the pulse height analysis (PHA) system for the stellarator Wendelstein 7-X, which has been developed and manufactured at the Institute of Plasma Physics and Laser Microfusion (IPPLM), Warsaw, in collaboration with the Max Planck Institute for Plasma Physics (IPP), Greifswald. The diagnostic is important for the measurements of plasma electron temperature, impurities content, and possible suprathermal tails in the spectra. In order to choose the best type of detector, analysis of technical parameters and laboratory tests were done. Detailed studies show that the most suitable detector for the PHA diagnostics is the PNDetector. </abstract>

The paper presents comparison of two silicon drift detectors (SDD), one made by Amptek, USA, and the second one by PNDetector, Germany, which are considered for a soft X-ray diagnostic system for W7-X. The sensitive area of the first one is 7 mm2 × 450 μm and the second one is 10 mm2 × 450 μm. The first detector is cooled by a double-stage Peltier element, while the second detector is cooled by single-stage Peltier element. Each one is equipped with a field-effect transistor (FET). In the detector from Amptek, the FET is mounted separately, while in the detector from PNDetector, the FET is integrated on the chip. The nominal energy resolution given by the producers of the first and the second one is 136 eV@5.9 keV (at -50°C) and 132 eV@5.9 keV (at -20°C), respectively. Owing to many advantages, the investigated detectors are good candidates for soft X-ray measurements in magnetic confinement devices. They are suitable for soft X-ray diagnostics, like the pulse height analysis (PHA) system for the stellarator Wendelstein 7-X, which has been developed and manufactured at the Institute of Plasma Physics and Laser Microfusion (IPPLM), Warsaw, in collaboration with the Max Planck Institute for Plasma Physics (IPP), Greifswald. The diagnostic is important for the measurements of plasma electron temperature, impurities content, and possible suprathermal tails in the spectra. In order to choose the best type of detector, analysis of technical parameters and laboratory tests were done. Detailed studies show that the most suitable detector for the PHA diagnostics is the PNDetector.

Comparison of silicon drift detectors made by Amptek and PNDetectors in application to the PHA system for W7-X

Institute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497, Warsaw,

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper presents comparison of two silicon drift detectors (SDD), one made by Amptek, USA, and the second one by PNDetector, Germany, which are considered...

Comparison of silicon drift detectors made by Amptek and PNDetectors in application to the PHA system for W7-X

Article Category: Proceedings of the Summer School of Plasma Diagnostics Phdiafusion 2015: “Soft X-Ray Diagnostics for Fusion Plasma” Bezmiechowa, Poland, 16-20 June 2015

Published Online: Oct 26, 2016

Page range: 409 - 412

Received: Jul 20, 2015

Accepted: Jan 05, 2016

DOI: https://doi.org/10.1515/nuka-2016-0067

Keywords
plasma diagnostic, pulse height analysis, solid-state detectors

© by Natalia Krawczyk

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Comparison of silicon drift detectors made by Amptek and PNDetectors in application to the PHA system for W7-X

Article Category: Proceedings of the Summer School of Plasma Diagnostics Phdiafusion 2015: “Soft X-Ray Diagnostics for Fusion Plasma” Bezmiechowa, Poland, 16-20 June 2015

Published Online: Oct 26, 2016

Page range: 409 - 412

Received: Jul 20, 2015

Accepted: Jan 05, 2016

DOI: https://doi.org/10.1515/nuka-2016-0067

Keywordsplasma diagnostic, pulse height analysis, solid-state detectors

© by Natalia Krawczyk

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
plasma diagnostic, pulse height analysis, solid-state detectors