[en] A study has been made of the properties of the SGS/sup 1/ D779 based readout electronics for limited streamer tubes, both with pulses from a pulse generator and with strip pulses from the actual chambers to be used in the SLD detector. To accommodate the special requirements of the SLD detector, a new hybrid circuit has also been developed and tested, which is capable of operating with pulses from the strips of tubes operated below the limited streamer mode voltages

[en] A FASTBUS slave module has been built for the acquisition and preliminary online elaboration of digital data coming from limited streamer tube strip readout electronics. The module, based on the Motorola MC68020 microprocessor, performs fast readout with zero suppression, cluster searching and monitoring of the apparatus. (author). 4 refs, 3 figs

[en] The Charge Collection Efficiency (CCE) for heavily irradiated silicon devices has been carefully investigated on a series of microstrip detectors. Large-area sensors designed for the CMS silicon tracker have been irradiated with neutrons and protons up to a very high fluence. Effects on CCE have been studied using a beam of minimum ionizing particles and a fast shaping time electronics similar to what is expected in CMS. The paper shows the performance of the sensors for CCE and Signal-to-Noise ratio (S/N) under different operating conditions

[en] The paper presents the results of an extensive set of measurements performed on silicon microstrip sensors produced by STMicroelectronics for the CMS Tracker. 5'' and 6'' technologies were used to process several series of detector prototypes. Detectors 300 μm thick were produced on 5'' wafers and fully characterized. A new design on 500 μm thick wafers with 6'' technology has been recently implemented. The performance of three different layouts has been investigated in terms of macroscopic electrical parameters and radiation resistance

[en] The paper describes the role of the n⁺ edge implants in the breakdown process of p⁺ on n-bulk silicon diodes. Laboratory measurements and simulation studies are presented on a series of test structures aimed at an optimization of the design in the edge region. The dependence of the breakdown voltage on the geometrical parameters of the devices is discussed in detail. Design rules are extracted for the use of n⁺-layers along the scribe line to avoid surface conduction of current generated by the exposed edges. The effect of neutron irradiation has been studied up to a fluence of 1.8x10¹⁵ cm^-2

[en] This paper investigates the performance of 500 μm thick silicon microstrip detectors before and after heavy irradiation. Prototype sensors, produced by STMicroelectronics, have been extensively studied using laboratory measurements, a radioactive source and a beam of minimum ionising particles. The comparison with a standard 300 μm sensor shows that the collected charge in thick devices scales linearly with thickness. By over-depleting the irradiated devices, the pre-irradiated charge collection efficiency is fully recovered. The measured noise is in good agreement with expectations. Although more work is needed, the paper shows that 500 μm thick devices are a promising technology for very large tracking systems

[en] This paper reports on a Fastbus module, the Cosmic Logic Unit (CLU), designed and built to form a muon trigger using the digital data coming from the limited streamer tubes of the Warm Iron Calorimeter (WIC) of the SLD detector at SLAC. The trigger configuration can be changed simply by downloading new trigger tables to two levels of fast access time RAMs, without interfering with the SLD Data Acquisition System. The module can handle two different types of trigger configurations: one for muons produced in the e⁺e^- collisions, and one for cosmic muons, with the purpose of monitoring and calibrating the whole apparatus on line

[en] The front-end digital electronics and the Fastbus readout and data reduction module for limited streamer tube strips of the SLD warm iron calorimeter and muon tracker are described. A special high-sensitivity front-end hybrid has been developed to read strip information from limited streamer tubes working well below the limited streamer voltages. An MC68020-based Fastbus module to perform fast readout, zero suppression, cluster searching and apparatus monitoring has also been designed, built and tested. (orig.)

[en] The performance of silicon micro-strip detectors after heavy irradiation have been investigated using a muon beam. Large-area sensors have been irradiated with neutrons and protons, read-out with fast shaping time electronics, and operated at low temperature. The paper presents a study of the charge collection efficiency, signal-to-noise ratio and hit reconstruction efficiency of these silicon devices

[en] This paper reports on a Fastbus module, the Cosmic Logic Unit (CLU), designed and built to form a muon trigger using the digital data coming from the limited streamer tubes of the Warm Iron Calorimeter (WIC) of the SLD detector at SLAC. The trigger configuration can be changed simply by down-loading new trigger tables to two levels of fast access time RAMs, without interfering with the SLD Data Acquisition System. The module can handle two different types of trigger configurations: one for muons produced in the e⁺e^- collisions, and one for cosmic muons, with the purpose of monitoring the calibrating the whole apparatus on line