This work presents the first results of ARDESIA, a novel, SDD-based, multichannel X-ray detector. ARDESIA has been optimized for synchrotron applications which require a high-rate, high-resolution x-ray spectroscopy detector. The main applications here considered are X-Ray Fluorescence (XRF) and X-ray Absorption Fine Structure (XAFS) spectroscopy. The structure of the ARDESIA detector is modular i.e. it is composed by single detection elements that can be juxtaposed together. Thus, several detection configurations can be obtained with this versatile unit that consists of a 4-channel, 25mm2 single-unit area, monolithic SDD matrix, produced by FBK (Trento, Italy). The SDD matrix is connected to a 4-channel, monolithic, CUBE preamplifier chip. SDD and CUBE chips are assembled on a compact ceramic carrier. To achieve good XRF and XAFS performances the detector needs to fulfil at best three main requirements: solid angle coverage, energy resolution and count rate capability. The CUBE preamplifier allows reaching high count rates (> 1Mcps), while keeping good spectroscopic performances as its extremely low white series noise guarantees good energetic resolution even at short pulse processing times. SDD matrix is produced with a low-leakage technology available at FBK, which allows achieving high energy resolutions, even with moderate cooling. The ARDESIA preamplifier output signal can be processed with both an analog ASIC and a digital pulse processor. Experimental measurements of the first produced prototype of the basic detection module are presented in this work.
The detection module of ARDESIA: A new, versatile array of sdds for X-ray spectroscopy synchrotron applications
Piemonte, C.;Zorzi, N.;
2016-01-01
Abstract
This work presents the first results of ARDESIA, a novel, SDD-based, multichannel X-ray detector. ARDESIA has been optimized for synchrotron applications which require a high-rate, high-resolution x-ray spectroscopy detector. The main applications here considered are X-Ray Fluorescence (XRF) and X-ray Absorption Fine Structure (XAFS) spectroscopy. The structure of the ARDESIA detector is modular i.e. it is composed by single detection elements that can be juxtaposed together. Thus, several detection configurations can be obtained with this versatile unit that consists of a 4-channel, 25mm2 single-unit area, monolithic SDD matrix, produced by FBK (Trento, Italy). The SDD matrix is connected to a 4-channel, monolithic, CUBE preamplifier chip. SDD and CUBE chips are assembled on a compact ceramic carrier. To achieve good XRF and XAFS performances the detector needs to fulfil at best three main requirements: solid angle coverage, energy resolution and count rate capability. The CUBE preamplifier allows reaching high count rates (> 1Mcps), while keeping good spectroscopic performances as its extremely low white series noise guarantees good energetic resolution even at short pulse processing times. SDD matrix is produced with a low-leakage technology available at FBK, which allows achieving high energy resolutions, even with moderate cooling. The ARDESIA preamplifier output signal can be processed with both an analog ASIC and a digital pulse processor. Experimental measurements of the first produced prototype of the basic detection module are presented in this work.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
