Radiation-hard ASICs for optical data transmission in the atlas pixel detector

被引:0
|
作者
Ziolkowski, M [1 ]
Arms, KE [1 ]
Buchholz, P [1 ]
Ciliox, A [1 ]
Gan, KK [1 ]
Holder, M [1 ]
Johnson, M [1 ]
Kagan, H [1 ]
Kass, R [1 ]
Nderitu, S [1 ]
Rahimi, A [1 ]
Rush, C [1 ]
Smith, S [1 ]
Ter-Antonian, R [1 ]
Zoeller, MM [1 ]
机构
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
关键词
D O I
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中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
We have developed two radiation-hard ASICs for optical data transmission in the ATLAS pixel detector at the CERN Large Hadron Collider (LHC). The first circuit is a driver chip for a Vertical Cavity Surface Emitting Laser (VCSEL) diode to be used for 80 Mbit/s data transmission from the detector. The second circuit is a Bi-Phase Mark decoder chip to recover the control data and 40 MHz clock received optically by a PIN diode on the detector side. During ten years of operation at the LHC, the ATLAS optical link circuitry will be exposed to a maximum total fluence of 10(15) 1-MeV-equivalent neutrons per cm(2). We have successfully implemented both ASICs in a commercial 0.25 mum CMOS technology using standard layout techniques to enhance the radiation tolerance. Both chips are four-channel devices compatible with common cathode PIN and VCSEL arrays. We present results from final prototype circuits and from irradiation studies of both circuits with 24 GeV protons up to a total dose of 57 Mrad.
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页码:1233 / 1237
页数:5
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