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The MASDA-X chip - A new multichannel ASIC for readout of pixelated amorphous silicon arrays

Description: The MASDA-X chip is designed specifically for reading out large amorphous silicon pixel arrays used in medical imaging research. Instrumenting these arrays requires a set of digital row address- ing chips to sequentially select the pixel rows for readout, and a set of column readout chips to collect and process the analog charge transferred to each column by the selected pixels. A 32 channel column readout chip, MASDA-R, has previously been designed and successfully imple- mented by Fermilab an… more
Date: December 1, 1998
Creator: Zimmerman, Tom
Partner: UNT Libraries Government Documents Department
open access

The SVX II silicon vertex detector at CDF

Description: The Silicon Vertex detector (SVX II) for the CDF experiment at the Tevatron p{anti p} collider is a 3-barrel 5-layer device with double-sided, AC-coupled silicon strip detectors. The readout is based on a custom IC, the SVX3 chip, capable of simultaneous acquisition, digitization and readout operation (dead-timeless). In this paper we report on the SVX II design and project status including mechanical design, frontend electronics, and data acquisition.
Date: December 1, 1998
Creator: Valls, Juan A.
Partner: UNT Libraries Government Documents Department
open access

The status of the D-Zero silicon tracker upgrade project

Description: The current status of the silicon tracker for the D0 upgrade project for Run II at the Tevatron is presented. After reviewing the design considerations the status of delivery and testing of the different silicon sensors is presented. The ladder production and assembly process is also discussed.
Date: September 27, 1999
Creator: Lehner, Frank
Partner: UNT Libraries Government Documents Department
open access

SVT: an online silicon vertex tracker for the CDF upgrade

Description: The SVT is an online tracker for the CDF upgrade which will reconstruct 2D tracks using information from the Silicon VerteX detector (SVXII) and Central Outer Tracker (COT). The precision measurement of the track impact parameter will then be used to select and record large samples of B hadrons. We discuss the overall architecture, algorithms, and hardware implementation of the system.
Date: July 1, 1997
Creator: Bardi, A.; Belforte, S. & Berryhill, J.
Partner: UNT Libraries Government Documents Department
open access

HIGH CHARGE EFFECTS IN SILICON DRIFT DETECTORS WITH LATERAL CONFINEMENT OF ELECTRONS.

Description: A new drift detector prototype which provides suppression of the lateral diffusion of electrons has been tested as a function of the signal charge up to high charge levels, when electrostatic repulsion is not negligible. The lateral diffusion of the electron cloud has been measured for injected charges up to 2 {center_dot} 10{sup 5} electrons. The maximum number of electrons for which the suppression of the lateral spread is effective is obtained.
Date: October 21, 1995
Creator: CASTOLDI,A. & REHAK,P.
Partner: UNT Libraries Government Documents Department
open access

The CDF silicon vertex tracker

Description: The Silicon Vertex Tracker (SVT) is presently being built as part of CDF upgrades. It is the online tracker which will reconstruct 2D tracks using information from the Silicon Vertex Detector (SVXII) and the Central Outer Chamber (COT). The precision measurement of the track impact parameter will allow to select high statistics b samples at trigger level and attack the study of CP violation in the b sector (i.e. in the B<sup>0</sup><sub>d</sub> {yields} {pi}<sup>+</sup>{pi}<sup>-</sup> decay) a… more
Date: July 12, 1999
Creator: Donati, S.
Partner: UNT Libraries Government Documents Department
open access

Noise analysis due to strip resistance in the ATLAS SCT silicon strip module

Description: The module is made out of four 6 cm x 6 cm single sided Si microstrip detectors. Two detectors are butt glued to form a 12 cm long mechanical unit and strips of the two detectors are electrically connected to form 12 cm long strips. The butt gluing is followed by a back to back attachment. The module in this note is the R{phi} module where the electronics is oriented parallel to the strip direction and bonded directly to the strips. This module concept provides the maximum signal-to-noise ratio… more
Date: August 1, 1996
Creator: Kipnis, I.
Partner: UNT Libraries Government Documents Department
open access

The silicon microstrip tracker for the D0 upgrade

Description: The silicon microstrip tracker is a major element of the D0 detector upgrade at Fermilab. After a general overview of the silicon tracker design, results are presented for a series of detector and electronics performance studies which include beam tests and proton irradiation. Charge sharing and strip-to-strip uniformity studies using an infrared laser are also presented.
Date: December 1, 1998
Creator: Roco, Maria Teresa P.
Partner: UNT Libraries Government Documents Department
open access

Preliminary results from the D-Zero silicon vertex beam tests

Description: Extensive tests of the D-Zero silicon vertex detectors and the final version of the SVX-II chip and readout electronics were performed at a test beam facility equipped with a 2 Tesla magnet at FNAL. Preliminary results are reported on the performance of the SVX-II chip, charge collection properties, signal to noise ratio, cluster pulse height and spatial resolution.
Date: October 1, 1997
Creator: Roco, M.T.P.
Partner: UNT Libraries Government Documents Department
open access

The CDF intermediate silicon layers detector

Description: The Intermediate Silicon Layers (ISL) detector is presently being built as part of CDF upgrades. The ISL is a large radius (28 cm) silicon tracker with a total active area of about 3.5 m 2 . The challenge is to build a device which provides precise 3D points introducing a minimal amount of material for the supporting structure. The design and the status of the project are described.
Date: December 1, 1998
Creator: al., S. Donati et
Partner: UNT Libraries Government Documents Department
open access

SVX3: A deadtimeless readout chip for silicon strip detectors

Description: A new silicon strip readout chip called the SVX3 has been designed for the 720,000 channel CDF silicon upgrade at Fermilab. SVX3 incorporates an integrator, analog delay pipeline, ADC, and data sparsification for each of 128 identical channels. Many of the operating parameters are programmable via a serial bit stream, which allows the chip to be used under a variety of conditions. Distinct features of SVX3 include use of a backside substrate contact for optimal ground referencing, and the capab… more
Date: December 1, 1997
Creator: Zimmerman, T.; Huffman, T.; Srage, J.; Stroehmer, R.; Yarema, R.; Garcia-Sciveras, M. et al.
Partner: UNT Libraries Government Documents Department
open access

[Hadroproduction of charmed and bottom mesons (Fermilab experiment E-653): Progress report, April 1, 1986--March 31, 1987]

Description: This progress report presents information on a number of different projects worked on during the reporting period. One project is the design and performance of a multiplicity jump trigger. The prototype consist of an upstream interaction veto detector, a 3/16 inch long graphite target, a pair of before multiplicity detectors, a 1 inch decay region, and finally six after multiplicity detectors. All detectors were 300 micron thick silicon wafers with a 14 mm square active area. A tritium proporti… more
Date: December 31, 1987
Partner: UNT Libraries Government Documents Department
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The CDF silicon vertex tracker: Online precision tracking of the CDF silicon vertex detector

Description: The Silicon Vertex Tracker is the CDF online tracker which will re- construct 2D tracks using hit positions measured by the Silicon Vertex Detector and Central Outer Chamber tracks found by the eXtremely Fast Tracker. The precision measurement of the track impact parameter will allow triggering on events contain- ing B hadrons. This will allow the investigation of several important problems in B physics, like CP violation and B<sub>s</sub> mixing, and to search for new heavy particles decaying … more
Date: September 17, 1999
Creator: al., W. Ashmanskas et
Partner: UNT Libraries Government Documents Department
open access

The CDF silicon vertex tracker: Online precision tracking of the CDF silicon vertex

Description: The Silicon Vertex Tracker is the CDF online tracker which will re- construct 2D tracks using hit positions measured by the Silicon Vertex Detector and Central Outer Chamber tracks found by the eXtremely Fast Tracker. The precision measurement of the track impact parameter will allow triggering on events contain- ing B hadrons. This will allow the investigation of several important problems in B physics, like CP violation and B<sub>s</sub> mixing, and to search for new heavy particles decaying … more
Date: August 24, 1999
Creator: al., W. Ashmanskas et
Partner: UNT Libraries Government Documents Department
open access

The BTeV pixel and microstrip detector

Description: The BTeV pixel detector is one of the most crucial elements in the BTeV experiment. While the pixel detector is technically challenging, we have made great progress towards identifying viable solutions for individual components of the system. The forward silicon tracker is based on more mature technology and its design has benefited from the experience of other experiments. Nevertheless, we have started an R&amp;D program on the forward silicon tracker and first results are expected some time n… more
Date: June 4, 2003
Creator: Kwan, Simon W
Partner: UNT Libraries Government Documents Department
open access

Commissioning and operation of the CDF silicon detector

Description: The CDF-II silicon detector has been partially commissioned and used for taking preliminary physics data. This paper is a report on commissioning and initial operations of the 5.8m{sup 2} silicon detector. This experience can be useful to the large silicon systems that are presently under construction.
Date: January 18, 2002
Creator: D'Auria, S.
Partner: UNT Libraries Government Documents Department
open access

A New Relative Proton Polarimeter for RHIC

Description: An innovative polarimeter based on proton carbon elastic scattering in the Coulomb Nuclear Interference (CNI) region has been installed and commissioned in the Blue ring of RHIC during the first RHIC polarized proton commissioning in September, 2000. The polarimeter consists of ultra-thin carbon targets and four silicon detectors. All elements are in a 1.6 meter vacuum chamber. This paper summarizes the polarimeter design issues and recent commissioning results.
Date: June 18, 2001
Creator: Huang, H.; Alekseev, I.; Bunce, G.; Bruner, N.; Deshpande, A.; Goto, Y. et al.
Partner: UNT Libraries Government Documents Department
open access

CCI1 Basic Detector Performance

Description: This document describes the basic detector performance for the CCI1 device, which consists of the Si2 and Ge2 detector components.
Date: June 2, 2005
Creator: Lange, D; Manini, H; Wright, D; Cunningham, M & Vetter, K
Partner: UNT Libraries Government Documents Department
open access

An Automatic Lithium Drifting Apparatus for Silicon and Germanium Detectors

Description: Drifting a thick lithium-drifted counter (silicon and germanium) is a time-consuming operation that frequently results in a poor device, owing to inadequate knowledge of progress of the drifting operation. The drifting apparatus described here automatically controls the temperature of the detector that is being drifted to maintain the leakage current at a preselected value. While drifting proceeds, a continuous measurement is made of the distance of the lithium-drifted region from the opposite … more
Date: February 8, 1964
Creator: Goulding, Fred S. & Hansen, W. L.
Partner: UNT Libraries Government Documents Department
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