Charakterisierung und Entwicklung eines CIP-Auslese-ASIC für das H1-Upgrade-Projekt 2000

Diese Arbeit beschreibt die Entwicklung und Charakterisierung des CMOS-Chips CIPix. Der CIPix wurde im Rahmen dieser Diplomarbeit im ASIC-Labor der Universität Heidelberg entwickelt und wird als Auslesechip für das CIP-Upgrade- Projekt eingesetzt werden. Er besteht aus 64 ladungsempfindlichen, rauscharmen Vorverstärkern. Die verstärkten Signale werden von 64 Komparatoren mit einstellbarer Polarität digitalisiert. Der Komparator generiert beim Überschreiten einer Referenzspannung ein Triggersignal, das mittels eines vierfachen Multiplexers auf 16 Kanälen ausgegeben wird. Es werden die Architektur des CIPix vorgestellt und die einzelnen Funktionselemente erläutert. Die durchgeführten Simulationen werden dargestellt sowie die Meßergebnisse präsentiert. ---- This thesis describes the development and characterization of the CMOS-chip CIPix. The CIPix has been developed in the ASIC-laboratory of the University of Heidelberg and will be used as a readout chip for the CIP upgrade project. It consists of 64 charge sensitive, low-noise preamplifiers. The input signals are digitized by a comparator with configurable polarity. The comparator produces a trigger signal if the input signal exceeds a reference level. These signals are multiplexed by 4 onto 16 digital outputs. The architecture of the CIPix is presented and the different functional elements are explained. The simulations are shown and test results are given

Development, Optimisation and Characterisation of a Radiation Hard Mixed-Signal Readout Chip for LHCb

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

Beam-Based Tests Of Intercepting Transverse Profile Diagnostics For FAIR

FAIR will serve as a versatile accelerator for ions ofenergies between 200 MeV/u and 29 GeV/u (FAIR startversion) with an intensity variation from some 103 to1013 ppp. In the transport lines the transverse profiledetermination will be mainly based on interceptingmethods: Scintillation screens, SEM-Grids and gas filledMWPCs. These devices are tested at the existing GSISIS18where ions are extracted either in fast mode within 1 μs or slow mode within 0.3 s. The imagingproperties of scintillation screens were investigated. Overintensities 107 to 109 ppp the light output for the screens islinear with respect to the ion intensity. Wire-basedmethods using SEM-Grids and MWPCs are discussed

The LHCb silicon tracker

The Silicon Tracker is a large-surface silicon micro-strip detector that covers the full acceptance of the experiment in a single tracking station upstream of the spectrometer magnet and the inner-most part of three tracking stations downstream of the magnet. Special emphasis has been put on module quality assurance at all stages of the production. Various tests are performed after each production step and each module goes through several burn-in cycles. The design of the LHCb silicon detectors is described and the main lessons learnt from the R&D phase are summarised. Focus will be on the experience from module production and the quality assurance program