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in publisher: "Fermi National Accelerator Laboratory"  
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Finite-element stress and deflection analysis of CDF yoke and end plug

Description: A large detector is being designed to study anti pp collisions at center-of-mass energies of up to 2000 GeV as part of the Fermilab Collider Detector Facility (CDF). The central detector of this facility consists of a solenoid, calorimeter yoke, and a variety of particle measurement devices. The yoke will be a large steel structure that will provide the magnetic flux return path as well as support structure for calorimetry and other instrumentation. It must resist both electromagnetic and gravi… more
Date: May 24, 1982
Creator: Wands, R.; Grimson, J.; Kephart, R. & Theriot, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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400 MeV upgrade for the Fermilab linac

Description: Fermilab has plans for a comprehensive accelerator upgrade to open new possibilities for both the fixed target and collider experimental programs. An early step in this program is to increase the energy of the linac from 200 to 400 MeV by replacing the last four of its nine 201 MHz Alvarez tanks with twenty-eight 805 MHz side-coupled cavity chains operating at about 8 MV/m average axial field. The principal purpose is to reduce the incoherent spacecharge tuneshift at injection into the Booster … more
Date: March 24, 1989
Creator: MacLachlan, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Full length prototype SSC dipole test results

Description: Results are presented from tests of the first full length prototype SSC dipole magnet. The cryogenic behavior of the magnet during a slow cooldown to 4.5K and a slow warmup to room temperature has been measured. Magnetic field quality was measured at currents up to 2000 A. Averaged over the body field all harmonics with the exception of b/sub 2/ and b/sub 8/ are at or within the tolerances specified by the SSC Central Design Group. (The values of b/sub 2/ and b/sub 8/ result from known design a… more
Date: April 24, 1987
Creator: Strait, J.; Brown, B.C.; Carson, J.; Engler, N.; Fisk, H.E.; Hanft, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Properties of inclusive W, Z events in p p collisions at 1. 8 TeV

Description: A preliminary measurement of the properties of W and Z production along with accompanying jets has been made in {anti p}p collisions at 1.8 TeV using the CDF detector at Fermilab. Distributions of jet multiplicity, and boson E{sub T}, with and without selection on jet multiplicity, were obtained. Agreement was found with perturbative QCD predictions.
Date: May 24, 1990
Creator: Watts, T. (Rutgers--the State Univ., Piscataway, NJ (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Response of the D0 Muon Chamber to changes in voltage, incident angle, gas composition, and oxygen contamination

Description: The measured space point resolution of a D0 Muon Chamber is /+-/0.31 mm perpendicular to the anode wire and 2.7 mm parallel to the wire. A voltage change of 1 kV, which changes the gas gain by a factor of 50, only causes a change of drift velocity of 12%. Tracks inclined of 45/degree/ have a resolution worse than those of 0/degree/ by a factor 3 /+-/ 2. A change in gas composition from CO/sub 2/(10%) to CO/sub 2/(11%) decreases the gas gain by 17 /+-/ 5%, and decreases drift velocity by 0.2 /+-… more
Date: February 24, 1989
Creator: Oshima, N. & Igarashi, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tests of prototype SSC magnets

Description: Results are presented from tests of the first two full length prototype SSC dipole magnets. Magnetic field measurements have been made at currents up to 2000 A. The two magnets achieved peak currents at 4.5K of 5790 A and 6450 A, respectively, substantially below the short sample limit of 6700 A. These peak values, however, could not be achieved reproducibly. Data are presented from studies performed to try to understand the poor quench performance.
Date: April 24, 1987
Creator: Strait, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pipe Cleaning Operating Procedures

Description: This cleaning procedure outlines the steps involved in cleaning the high purity argon lines associated with the DO calorimeters. The procedure is broken down into 7 cycles: system setup, initial flush, wash, first rinse, second rinse, final rinse and drying. The system setup involves preparing the pump cart, line to be cleaned, distilled water, and interconnecting hoses and fittings. The initial flush is an off-line flush of the pump cart and its plumbing in order to preclude contaminating the … more
Date: January 24, 1991
Creator: Clark, D. & Wu, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: Ladder Removal Stress Analysis

Description: Two different methods will be used to affix ladders to the active bulkhead. Layer 1 and layer 3 ladders will be attached to the active bulkhead using pins. To provide a highly conductive thermal path between these ladders and the cooling channel in the active bulkhead, a small amount of thermally conductive grease will be applied to the bulkhead just prior to ladder installation. Layer 2 and layer 4 ladders will be attached using the same method with the exception that thermally conductive epox… more
Date: October 24, 1994
Creator: Pawlak, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D0 Experimental Area Emergency Backup Power and Generator Test

Description: The DO experimental area has a generator designated as emergency power. This generator provides power for critical loads and starts automatically upon loss of commercial power. This note concerns the testing of this generator. A list of loads is attached to this note. One of the loads on the emergency power grid is a 10KVA Uninterruptable Power Supply(UPS). The UPS powers the cryogenic controls and Oxygen deficiency hazard equipment(ODH) and has a minimum rating of 20 minutes while on its batte… more
Date: January 24, 1991
Creator: Markley, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MFH Top-Half Ring Connectros

Description: In the end calorimeter of the D-zero experiment, uranium and stainless steel plates are assembled into modules which are to be installed into the cryostat as individual units. A single inner module will be surrounded by 16 middle modules, which are surrounded by 16 outer modules. The 16 modules which comprise the middle ring are to be connected at the outer radius by a link, which is pinned to each front plate. The expected forces at each of the 16 connections vary from 1400 Ib to 69,000 lb (Ap… more
Date: October 24, 1988
Creator: Nachtrieb, Rob
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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EC Driver - 41" Stroke Hydraulic Cylinder

Description: It was decided to use a hydraulic cylinder resting on the floor of the argon spill trough in the EC carriage to drive the EC's motion on the center beam. Space was limited due to the spill bellows and their required support and containment system. The 0.0. of the cylinder had to be limited to 3 to 3-1/2 inches, maximum. The weight of a wet EC and carriage is estimated to be 320 tons. The rolling coefficient of friction of the Tychoway rollers chosen to guide the EC and carriage along the harden… more
Date: May 24, 1990
Creator: Jaques, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CC Cryostat Cooldown Test Warmup

Description: This report discusses the warming up of the stainless steel inner vessel of the CC Cryostat back to room temperature after it has been cooled down by liquid nitrogen. It considers the sufficiency of a standard magnet warm-up 12KW heater in delivering enough heat to warm the Crypstat in a couple of days. The concept of sufficiency will be answered by the following questions, and by an experimental test that was made of the heater in question.
Date: September 24, 1987
Creator: Peterson, T. & Fitzpatrick, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low Temperature Thermal Expansion of G-10 Plastic and Mylar

Description: This engineering note is a summary of test information and conclusions from the thermal expansion tests conducted at D-O during the fall of 1992. Each test was conducted separately but using the same basic procedure and equipment. While information on material properties at room temperature and above for these products is quite well doccumented, the companies producing these products had no available data about the thermal properties of these materials at cryogenic temperatures. This lack of re… more
Date: May 24, 1993
Creator: Bell, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: Control Dewar Venturi Calibration Explanation for Toshiba

Description: This document is intended to explain the calibration data for the venturi, FE-3253H, which is installed in the control dewar. Further, this document will help explain how to use the venturi to make mass flow measurements during typical operating conditions. The purpose of the calibration data enclosed from the Colorado Engineering Experiment Station Inc. is to experimentally show that the venturi follows the flow equation which is enclosed as Eq. 7-36 on page 155, from the Applied Fluid Dynamic… more
Date: January 24, 1997
Creator: Kuwazaki, Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid Nitrogen Subcooler Pressure Vessel Engineering Note

Description: The normal operating pressure of this dewar is expected to be less than 15 psig. This vessel is open to atmospheric pressure thru a non-isolatable vent line. The backpressure in the vent line was calculated to be less than 1.5 psig at maximum anticipated flow rates.
Date: April 24, 1997
Creator: Rucinski, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tauwer Test

Description: TAUWER is a proposed astroparticle experiment to detect ultrahigh energy TAU neutrinos, using detector towers arrayed on a mountainside looking down into a valley. This test is to study the possibility of replacing Hamamatsu miniature PMTs with SiPMs for readout by determining the response of scintillation detectors with SiPM readout to low energy electrons, 2 GeV or lower, as the beam will provide. The detector itself is a compact package shown in the picture on the cover. it was used in a par… more
Date: January 24, 2011
Creator: Russ, James; Iori, Maurizio & Ronzhin, Anatoly
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

BPM System Improvements

Description: During the accelerator studies period of 12/90 through 1/91 the Accumulator BPM system was investigated in some detail in an effort to improve its reliability and accuracy in making closed orbit measurements. The motivation for this is to try and improve the beam energy resolution for E760. The relativistic {beta} of the {bar p} is given by {beta} = f{sub R}L/c where f{sub R} is the revolution frequency, L is the orbit length ({approx} 474050mm), and c is the speed of light. Hence, the error in… more
Date: April 24, 1991
Creator: Church, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Proposal to Measure Cross Sections for pp --> pX, nX as a Function of s and M^2X Using the Internal Target Facility at NAL

Description: A simple counter experiment is proposed to investigate the s and s/M{sup 2} dependence of the invariant cross section for the single particle inclusive reactions pp {yields} pX and pp {yields} nX in a limited region of phase space. 4 < s/M{sup 2} < 20, 40 < s < s{sub max}, 0.1 < |t| < 0.6 near the kinematic limit. The neutron reaction will be studied directly, using a hydrogen jet, and also by measuring the difference between pp {yields} pX and pD {yields} pX using a deuterium… more
Date: October 24, 1972
Creator: Aslpector, J.; Cohen, K.; Cvijanovich, G.; Delillo, T.; Maglich, B.; Pagnamenta, A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New physics searches with photons in CDF

Description: A brief review of searches for physics beyond the Standard Model with photons using the CDF detector at the Tevatron is given here. These include searches for supersymmetry, extra dimensions, excited electrons and W/Z+{gamma} production, as well as anomalous photon production. Recent results from CDF Run II experiment are presented, but some results from Run I are also reviewed.
Date: May 24, 2004
Creator: Lee, Sungwon
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Searches for physics beyond the standard model in ttbar events

Description: The top quark is currently only observed at the Tevatron, where it is mainly produced in t{bar t} pairs. Due to the very high mass of the top quark compared to the other quarks and the gauge bosons, it is expected to play a special role in electroweak symmetry breaking. Therefore it might be especially sensitive to new physics. Measurements of various production and decay quantities of the top quark could lead to discoveries of physics beyond the standard model. Several such measurements were p… more
Date: February 24, 2004
Creator: Merkel, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Measurement of {gamma}{sub T} with the {gamma}{sub T} quads on and off

Description: An experimental procedure for measuring {gamma}{sub T} has been developed and tested in two different measurements, with the {gamma}{sub T} quads on and off. The results were compared to MAD calculations. The discrepancy between the measured {gamma}{sub T} and the calculated {gamma}{sub T} is less than 5%.
Date: May 24, 2004
Creator: Xi Yang, James MacLachlan and Charles M. Ankenbrandt
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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