Silicon Drift Detectors (SDDs) are a consolidated choice for spectroscopic applications in X-rays detection. Recently, they are emerging as promising candidates also for detection and spectroscopy of electrons. When employing cm-sized SDDs, cooling is required to reduce noise for large-area detectors (here a square of 8 mm side), however Thermo-Electric Cooling (Peltier cells) adds complexity in vacuum setups (with electric fields shaping the trajectories of electrons) needing efficient heat removal approaches. We present here a very compact and straightforward alternative cooling solution, leveraging metal 3D-printing technologies, where liquid cooling is embedded in the detector metallic case. We report the design of a compact detection module (38 mm diameter × 35 mm in length) and its preliminary experimental characterization. The energy resolution at the Mn -Kα fluorescence line (5.9 keV) was evaluated using a 55Fe radioactive source. Under operating conditions of 320 ns peaking time and cooling at 3° C, a Full Width at Half Maximum (FWHM) below 200 eV was achieved. This result supports its integration into the ANDROMeDa project for electron spectroscopy applications, where the novel “dark-PMT” detector is employed for investigating the dark matter.
A Compact SDD X-Ray and Electrons Detector with 3D-Printed Metal Enclosure Embedding Liquid Cooling
Zorzi, N.;
2025-01-01
Abstract
Silicon Drift Detectors (SDDs) are a consolidated choice for spectroscopic applications in X-rays detection. Recently, they are emerging as promising candidates also for detection and spectroscopy of electrons. When employing cm-sized SDDs, cooling is required to reduce noise for large-area detectors (here a square of 8 mm side), however Thermo-Electric Cooling (Peltier cells) adds complexity in vacuum setups (with electric fields shaping the trajectories of electrons) needing efficient heat removal approaches. We present here a very compact and straightforward alternative cooling solution, leveraging metal 3D-printing technologies, where liquid cooling is embedded in the detector metallic case. We report the design of a compact detection module (38 mm diameter × 35 mm in length) and its preliminary experimental characterization. The energy resolution at the Mn -Kα fluorescence line (5.9 keV) was evaluated using a 55Fe radioactive source. Under operating conditions of 320 ns peaking time and cooling at 3° C, a Full Width at Half Maximum (FWHM) below 200 eV was achieved. This result supports its integration into the ANDROMeDa project for electron spectroscopy applications, where the novel “dark-PMT” detector is employed for investigating the dark matter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
