RT Journal Article
T1 Radiation tolerant D/A converters for the LHC cryogenic system
A1 Franco Peláez, Francisco Javier
A1 Zong, Yi
A1 Agapito Serrano, Juan Andrés
A1 Marques, José G.
A1 Fernandes, Ana C.
A1 Casas-Cubillos, Juan
A1 Rodríguez-Ruiz, Miguel Ángel
AB The electronic instrumentation of the Large Hadron Collider (LHC) cryogenic system is expected to receive a large radiation dose (>10E13 n·cm−2 and 1–2 kGy (Si)) within 10 years of activity so all the electronic devices should tolerate this radiation level without a significant degradation. This paper focuses on the selection of a radiation tolerant 12-bit parallel input D/A converter suitable for the signal conditioners for cryogenic thermometry in the LHC. During an initial campaign, some candidate converters were irradiated to determine the most tolerant device. Once this was determined, a massive test was carried out. Some weak points of the selected device were addressed through the use of an external voltage source and a radiation tolerant operational amplifier. The tests show that a system consisting of an {AD565} D/A converter, coupled to an external voltage reference and an OPA627 operational amplifier can tolerate a total radiation dose up to 5×10E13 n·cm−2 and 2100 Gy (Si), thus satisfying the requirements set by CERN.
PB Elsevier Science BV
SN 0168-9002
YR 2005
FD 2005-11-20
LK https://hdl.handle.net/20.500.14352/51320
UL https://hdl.handle.net/20.500.14352/51320
LA eng
NO © 2005 Elsevier.
NO Ministerio de Educación y Ciencia
DS Docta Complutense
RD 27 abr 2025