Instrumentation amplifiers and voltage controlled current sources for LHC cryogenic instrumentation

被引：0

作者：

Agapito, JA ^{[1
]}

Barradas, NP ^{[1
]}

Cardeira, FM ^{[1
]}

Casas, J ^{[1
]}

Fernandes, AP ^{[1
]}

Franco, FJ ^{[1
]}

Gomes, P ^{[1
]}

Goncalves, IC ^{[1
]}

Cachero, AH ^{[1
]}

Lozano, J ^{[1
]}

Martin, MA ^{[1
]}

Marques, JG ^{[1
]}

Paz, A ^{[1
]}

Prata, MJ ^{[1
]}

Ramalho, AJG ^{[1
]}

Ruiz, MAR ^{[1
]}

Santos, JP ^{[1
]}

Vieira, A ^{[1
]}

机构：

[1] CERN, LHC Div, Geneva, Switzerland

来源：

PROCEEDINGS OF THE SIXTH WORKSHOP ON ELECTRONICS FOR LHC EXPERIMENTS | 2000年 / 2000卷 / 10期

关键词：

D O I：

暂无

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：

Instrumentation amplifiers and voltage controlled current sources have been designed by using single operational amplifiers (OPA124, TLE2071 and OPA627). Their performance has been evaluated in the laboratory and under neutron radiation. On line measurements of the offset voltages, offset currents, closed loop gain, CMRR and bias currents were performed on the amplifiers. The current sources were set to a constant value and the current was monitored on-line. The radiation tolerance of commercial voltage references has also been investigated. The radiation was performed out in ITN (Portugal) research nuclear reactor. In comparison to previous experimental campaigns the gamma radiation has been reduced by a factor 15 for a given neutron dose. This is achieved thanks to a recently constructed facility for neutron beam extraction.

引用

页码：275 / 279

页数：5