TY  - GEN
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/6708/
AV  - public
KW  - LHCb 
KW  -  Beetle 
KW  -  Strahlenhärte 
KW  -  Siliziumstreifendetektor 
KW  -  Single Event UpsetLHCb 
KW  -  Beetle 
KW  -  Radiation Hardness 
KW  -  Silicon Strip Detector 
KW  -  Single Event Upset
TI  - Development, Optimisation and Characterisation of a Radiation Hard Mixed-Signal Readout Chip for LHCb
A1  - Löchner, Sven
N2  - The Beetle chip is a radiation hard, 128 channel pipelined readout chip for silicon strip detectors. The front-end consists of a charge-sensitive preamplifier followed by a CR-RC pulse shaper. The analogue pipeline memory is implemented as a switched capacitor array with a maximum latency of 4us. The 128 analogue channels are multiplexed and transmitted off chip in 900ns via four current output drivers. Beside the pipelined readout path, the Beetle provides a fast discrimination of the front-end pulse. Within this doctoral thesis parts of the radiation hard Beetle readout chip for the LHCb experiment have been developed. The overall chip performances like noise, power consumption, input charge rates have been optimised as well as the elimination of failures so that the Beetle fulfils the requirements of the experiment. Furthermore the characterisation of the chip was a major part of this thesis. Beside the detailed measurement of the chip performance, several irradiation tests and an Single Event Upset (SEU) test were performed. A long-time measurement with a silicon strip detector was also part of this work as well as the development and test of a first mass production test setup. The Beetle chip showed no functional failure and only slight degradation in the analogue performance under irradiation of up to 130Mrad total dose. The Beetle chip fulfils all requirements of the vertex detector (VELO), the trigger tracker (TT) and the inner tracker (IT) and is ready for the start of LHCb end of 2007.
ID  - heidok6708
Y1  - 2006///
ER  -