Session a a 11 Realization and test of a 25m Rad-Hard chip for alice its data acquisition chain
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- A28 - Design and Performance of the CMS Pixel Readout Chip
- A31 - Test and Evaluation of HAL25: the ALICE SSD Front-End Read-Out Chip
AbstractThe digital optical link system for the CMS Tracker is essentially a 2+2 way bi-directional system with two primary functions: to transmit the 40MHz LHC clock and CMS Level 1 Trigger to the Tracker and to communicate control commands that allow the setup and monitoring of the Tracker front-end ASICs. The specifications of the system are outlined and the architecture and implementation is described from the scale of the components up to the level of the full optical links, including their intended operation in the CMS Tracker. The performance and radiation hardness of the various individual components is examined. Results of tests of complete prototype digital optical links, based on the intended final components, including front-end digital optohybrids made at CERN, are presented.
A status of early series production of the barrel hybrids and modules of the ATLAS Semiconductor Tracker (SCT) is reported. The manufactures of 48 hybrids and 30 modules were completed in Japan cluster by April 30 and other clusters are expected to follow soon. Quality assurance tests were performed for all hybrids, including a 100-hours-burn-in test. Bad channel appearance was found to be less than 1%. There was very little increase in the defective channel after the 100-hours-burn-in test. Results from the quality assurance tests for hybrids and modules are described in detail. A27 - Performance of the Beetle Readout Chip for LHCb Niels van Bakel, Martin van Beuzekom, Jo van den Brand, Eddy Jans, Sander Klous, Hans Verkooijen (NIKHEF / Free University Amsterdam) Daniel Baumeister, Werner Hofmann, Karl-Tasso Knoepfle, Sven Loechner, Michael Schmelling (Max-Planck Institute for Nuclear Physics Heidelberg) Neville Harnew, Nigel Smale (University of Oxford) Ulrich Trunk (Physics Institute, University of Heidelberg) Edgar Sexauer (now at Dialog Semiconductor GmbH, Kirchheim/Teck-Nabern) Martin Feuerstack-Raible (now at Fujitsu Mikroelektronik GmbH, Dreieich-Buchschlag) The talk will be presented by Sven Loechner (Max-Planck Institute for Nuclear Physics Heidelberg) Sven Loechner Max-Planck-Institut fuer Kernphysik Tel. +49 (0)6221 54-5340 Fax. +49 (0)6221 54-4345 KIP / ASIC-Labor email: loechner@kip.uni-heidelberg.de www: http://wwwasic.kip.uni-heidelberg.de/lhcb
AbstractThe Beetle is a 128 channel pipelined front end chip developedin 0.25 um standard CMOS technology for the LHCb experiment.After intensive testing of the current version (Beetle1.1) an improved design (Beetle1.2), which is hardened against Single Event Upsets (SEU) has been submitted in April 2002. The key measurements on the Beetle1.1, which mainly drove the design changes for the Beetle1.2, are described together with the SEU robustness concept. First performance measurements with the new readout chip are shown. A28 - Design and Performance of the CMS Pixel Readout ChipHans-Christian Kaestli Paul Scherrer Institut, Switzerland Abstract Readout chips for pixel detectors at LHC are exposed to enormeous fluence rates that are in the range of 2*10^7 particles per second and cm^2. The architecture of a pixel readout chip must be chosen such, to have minimal data losses even at these enormous data rates. The CMS pixel readout chips is based on a Column Drain Architecture that should have the necessary performance. We present the design and measured performance of the final CMS pixel chip in DMILL technology. The measurements in a high rate LHC-like testbeam will be shown, where the data losses of a bump-bonded pixel chip as a function of particle fluence has been studied. A29 - Results from the first CMS Tracker System Test Nancy Marinelli Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BW, UK Phone n. 44-207-5947795, Fax n. 44-207-8238830
Tel : . 41-22-76-71666 Fax n. 41-22-76-78940 Mail Address: n.marinelli@ic.ac.uk, Nancy.Marinelli@cern.ch AbstractThe CMS Tracker has entered its construction phase. The first rod in its final configuration has been built. A complete series of tests has been performed either in the laboratory and in beam tests on the separate modules before assembling them in the rod. The functionality of the whole system, (readout, control, data acquisition) has been tested carefully both on the hardware and software point of view, the hardware architecture being in its final version and the software architecture very close to the final one. The most relevant tests and results are shown here.
AbstractThe HAL25 is a mixed low noise, low power consumption and radtol ASIC intended for read-out of Silicon Strip Detectors (SSD) in the ALICE tracker. It is designed in a 0.25 micron CMOS process. The chip contains 128 channels of preamplifier, shaper and a capacitor to store the charge collected on a detector strip. The analogue data is held by an external logic signal and can be serially read out through an analogue multiplexer. A slow control mechanism based on JTAG protocol was implemented for a programmable bias generator, an internal calibration system and selection of functional modes
R66 G14 Rutherford Appleton Laboratory Chilton, Didcot, Oxfordshire OX11 0QX
(01235) 44 55 41 office (01235) 44 68 63 fax j.matheson@rl.ac.uk
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