In-Beam Diamond Start Detectors

被引：21

作者：

Ciobanu, M. ^{[1
,2
]}

Berdermann, E. ^{[1
]}

Herrmann, N. ^{[3
]}

Hildenbrand, K. D. ^{[1
]}

Kis, M. ^{[1
,4
]}

Koenig, W. ^{[1
]}

Pietraszko, J. ^{[5
]}

Pomorski, M. ^{[6
]}

Rebisz-Pomorska, M. ^{[6
]}

Schuettauf, A. ^{[1
]}

机构：

[1] GSI Helmholtz Zentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[2] Space Sci Inst, Bucharest 077125, Romania

[3] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany

[4] Ruder Boskovia Inst, Zagreb 10000, Croatia

[5] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

[6] CEA, Diamond Sensor Lab, LIST Saclay, F-91191 Gif Sur Yvette, France

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2011年 / 58卷 / 04期

关键词：

Analog integrated circuits; detector instrumentation; timing circuits; timing electronics; CVD-DIAMOND; ION; TRACKING;

D O I：

10.1109/TNS.2011.2160282

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes operation principles and the in-beam performance of Start Detector (SD) assemblies consisting of Diamond Detectors (DDs) grown by Chemical Vapour Deposition (CVD) and Front End Electronics (FEE) which have been designed for and used in various nuclear physics experiments at GSI Helmholtz Center for Heavy Ion Research in Darmstadt. In parallel to the FEE design we have performed extensive calculations to model the dependence of the signal-to-noise ratio (S/N) and the time resolution sigma(t) on various quantities such as the collected charge Q(col), the detector capacitance C(D), the temperature T, and finally the noise contribution and bandwidth of the amplifier. In combination with the new FEEs (including an application-specific integrated circuit, ASIC) we have tested both polycrystalline and single-crystal diamonds of various sizes and thicknesses with relativistic ion beams ranging from protons to heaviest ions. For heavy ions all setups deliver time resolutions sigma(t) < 60 ps. In case of protons the small primary detector signals require single-crystals as material and more elaborated designs like segmentation of the detector area and the increase of the amplifier input impedance. The best time resolution obtained for relativistic protons was sigma(t) = 117 ps.

引用

页码：2073 / 2083

页数：11

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