The XGS instrument on-board THESEUS

Applications of Novel Scintillators for Research and Industry 2016

物理学;工业技术

Fuschino, F.^1,2,3 ; Campana, R.^2,3 ; Labanti, C.^2,3 ; Marisaldi, M.^2,3 ; Amati, L.^2 ; Fiorini, M.^4 ; Uslenghi, M.^4 ; Baldazzi, G.^1,3 ; Evangelista, Y.^5 ; Elmi, I.^6 ; Feroci, M.^5 ; Frontera, F.^2,7 ; Rachevski, A.^8 ; Rignanese, L.P.^1,3 ; Vacchi, A.^8,9 ; Zampa, G.^8 ; Zampa, N.^8 ; Rashevskaya, I.^10 ; Bellutti, P.^11 ; Piemonte, C.^11

Department of Physics, University of Bologna, Viale Berti Pichat 6/2, Bologna

I-40127, Italy^1

INAF/IASF-Bologna, Via Gobetti 101, Bologna

I-40129, Italy^2

INFN - Sezione di Bologna, Viale Berti Pichat 6/2, Bologna

I-40127, Italy^3

INAF/IASF-Milano, Via Bassini 23, Milano

I-20133, Italy^4

INAF/IAPS, Via Fosso del Cavaliere 100, Roma

I-00133, Italy^5

CNR/IMM, Via Gobetti 101, Bologna

I-40129, Italy^6

Department of Physics, University of Ferrara, Via Giuseppe Saragat 1, Ferrara

I-44122, Italy^7

INFN - Sezione di Trieste, Padriciano 99, Trieste

I-34127, Italy^8

Mathematics and Informatics Dept., Udine University, Via delle Scienze 206, Udine

I- 33100, Italy

(10) TIFPA Dept., Via Sommarive 14, Povo TN

38123, Italy

(11) CMM Dept., Burno Kessler Foundation (FBK), Via Sommarive 18, Povo

I-38123, Italy^9

关键词: Background rejection;    Gamma spectroscopy;    Readout Electronics;    Silicon Drift Detector;    Silicon photo-detector;    Space instrumentations;    Spatial segmentation;    System complexity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/763/1/012009/pdf
DOI  :  10.1088/1742-6596/763/1/012009

学科分类：工业工程学

来源: IOP

【 摘 要 】

Consolidated techniques used for space-borne X-ray and gamma-ray instruments are based on the use of scintillators coupled to Silicon photo-detectors. This technology associated with modern very low noise read-out electronics allows the design of innovative architectures able to reduce drastically the system complexity and power consumption, also with a moderate-to-high number of channels. These detector architectures can be exploited in the design of space instrumentation for gamma-spectroscopy with the benefit of possible smart background rejection strategies. We describe a detector prototype with 3D imaging capabilities to be employed in future gamma-ray and particle space missions in the 0.002-100 MeV energy range. The instrument is based on a stack of scintillating bars read out by Silicon Drift Detectors (SDDs) at both ends. The spatial segmentation and the crystal double-side readout allow a 3D position reconstruction with ∼3 mm accuracy within the full active volume, using a 2D readout along the two external faces of the detector. Furthermore, one of the side of SDDs can be used simultaneously to detect X-rays in the 2-30 keV energy range. The characteristics of this instrument make it suitable in next generation gamma-ray and particle space missions for Earth or outer space observations, and it will be briefly illustrated.