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Simulation of the Focusing DIRC Optics with Mathematica

Description: The Focusing DIRC is considered for the Barrel PID at a possible Super-B factory. To reduce sensitivity to background, it would be desirable to reduce a size of the present BaBar photon detector. One way to do it is to replace it with a focusing optics and use smaller photon detector pixels. We have simulated the focusing optics with simulation software based on a 3D calculation performed with the Mathematica program. The software does not use Optica package, instead, it uses its own 3D algorit… more
Date: February 15, 2010
Creator: Va'vra, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SLAC Cosmic Ray Telescope Facility

Description: SLAC does not have a test beam for the HEP detector development at present. We have therefore created a cosmic ray telescope (CRT) facility, which is presently being used to test the FDIRC prototype. We have used it in the past to debug this prototype with the original SLAC electronics before going to the ESA test beam. Presently, it is used to test a new waveform digitizing electronics developed by the University of Hawaii, and we are also planning to incorporate the new Orsay TDC/ADC electron… more
Date: February 15, 2010
Creator: Va'vra, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker

Description: The GLAST Large Area Telescope (LAT) is a gamma-ray telescope consisting of a silicon micro-strip detector tracker followed by a segmented CsI calorimeter and covered by a segmented scintillator anticoincidence system that will search for {gamma}-rays in the 20 MeV-300 GeV energy range. The results of the environmental tests performed on the flight modules (towers) of the Tracker are presented. The aim of the environmental tests is to verify the performance of the silicon detectors in the expec… more
Date: February 15, 2007
Creator: Brigida, M.; Caliandro, A.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance of the Integrated Tracker Towers of the GLAST Large Area Telescope

Description: The GLAST Large Area Telescope (LAT) is a high energy gamma ray observatory, mounted on a satellite that will be own in 2007. The LAT tracker consists of an array of tower modules, equipped with planes of silicon strip detectors (SSDs) interleaved with tungsten converter layers. Photon detection is based on the pair conversion process; silicon strip detectors will reconstruct tracks of electrons and positrons. The instrument is actually being assembled. The first towers have been already tested… more
Date: February 15, 2007
Creator: Brigida, M.; Caliandro, A.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Barrel IFR Instrumented With Limited Streamer Tubes for BABAR Experiment

Description: The new barrel Instrumented Flux Return (IFR) of BABAR detector will be reported here. Limited Streamer Tubes (LSTs) have been chosen to replace the existing RPCs as active elements of the barrel IFR. The layout of the new detector will be discussed: in particular, a cell bigger than the standard one has been used to improve efficiency and reliability. The extruded profile is coated with a resistive layer of graphite having a typical surface resistivity between 0.2 and 0.4 MOhm/square. The tube… more
Date: November 15, 2006
Creator: Andreotti, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Automated Science Processing for GLAST LAT Data

Description: Automated Science Processing (ASP) will be performed by the GLAST Large Area Telescope (LAT) Instrument Science Operations Center (ISOC) on data from the satellite as soon as the Level 1 data are available in the ground processing pipeline. ASP will consist of time-critical science analyses that will facilitate follow-up and multi-wavelength observations of transient sources. These analyses include refinement of gamma-ray burst (GRB) positions, timing, flux and spectral properties, off-line sea… more
Date: October 15, 2007
Creator: Chiang, James; /NASA, Goddard /SLAC; Carson, Jennifer; Focke, Warren & /SLAC
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Implementation and Performance of the Tau Trigger in the ATLAS Experiment

Description: Triggering on hadronic taus at the LHC is a difficult task due to the high rate and occupancy of the events. On the other hand, the tau trigger increases the discovery potential of ATLAS in many physics channels, among others the Standard Model or SuperSymmetric Higgs (charged or neutrals) production. In order to cope with the rate and optimize the efficiency on important physics channels, the results of the current simulation studies indicate that the ATLAS tau trigger should be used either wi… more
Date: November 15, 2011
Creator: Bosman, M.; Casado, P.; /Barcelona, IFAE; Dam, M.; U., /Copenhagen; Demers, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LAT Onboard Science: Gamma-Ray Burst Identification

Description: The main goal of the Large Area Telescope (LAT) onboard science program is to provide quick identification and localization of Gamma Ray Bursts (GRB) onboard the LAT for follow-up observations by other observatories. The GRB identification and localization algorithm will provide celestial coordinates with an error region that will be distributed via the Gamma ray burst Coordinate Network (GCN). We present results that show our sensitivity to bursts as characterized using Monte Carlo simulations… more
Date: October 15, 2007
Creator: Kuhn, Frederick; U., /Ohio State; Bonnell, Jerry; /NASA, Goddard; Hughes, Richard; U., /Ohio State et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experience With the Resistive Plate Chamber in the BaBar Experiment

Description: The BABAR detector has operated nearly 200 Resistive Plate Chambers (RPCs), constructed as part of an upgrade of the forward endcap muon detector, for the past two years. The RPCs experience widely different background and luminosity-driven singles rates (0.01-10 Hz/cm{sup 2}) depending on position within the endcap. Some regions have integrated over 0.3 C/cm{sup 2}. RPC efficiency measured with cosmic rays and beam is high and stable. However, a few of the highest rate RPCs have suffered effic… more
Date: November 15, 2006
Creator: Bellini, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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