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WR 10 Millimeter Wave Microcalorimeter

Description: Abstract: A microcalorimeter has been built in WR 10 waveguide, 75-110 GHz, to serve as a power standard at the National Bureau of Standards (NBS). Included here is an evaluation of the errors in using the microcalorimeter for the measurement of effective efficiency of bolometer mounts. The error analysis shows a systematic uncertainty of +/- .83 percent and a random uncertainty of .37 percent.
Date: June 1981
Creator: Weidman, Manly P. & Hudson, Paul A.
Partner: UNT Libraries Government Documents Department

User's Guide for the Cone Calorimeter

Description: Abstract: This document provides instructions for users of the Cone Calorimeter in installing, operating, maintaining, and repairing the instrument. It is intended for training new operators at NBS and at other laboratories. The troubleshooting and repair sections will be a useful reference section even for experienced operators, since remedies for a large number of potential instrument malfunctions are outlined there.
Date: 1988
Creator: Twilley, William H. & Babrauskas, Vytenis
Partner: UNT Libraries Government Documents Department

WR15 Microwave Calorimeter and Bolometer Unit

Description: Descriptions of the principal changes in the calorimeter and bolometer unit from the WR28 models of a microwave serving as National Bureau of Standards standard for power measurements in the frequency range 50 to 75 GHz.
Date: May 1972
Creator: Harvey, Morris E.
Partner: UNT Libraries Government Documents Department

The Heat of Solution of Neptunium Metal and the Heats of Formation of some Neptunium Chlorides ; A Microcalorimeter for Heat of Solution Measurements

Description: Due to a need of precise thermodynamical and thermochemical data on these elements and their compounds for the understanding and correlation of the chemical behavior of these substances, this report measures the heat of the solution of neptunium metal and the heats of formation of the neptunium chlorides using a microcalorimeter to measure the heat.
Date: August 1950
Creator: Westrum, Edgar F., (Jr.) & Eyring, LeRoy
Partner: UNT Libraries Government Documents Department

Calorimetric Determination of Constant-Pressure Specific Heats of Carbon Dioxide at Elevated Pressures and Temperatures

Description: Note presenting the measurement of the constant-pressure specific heat of carbon dioxide over the range of pressures and temperatures from ambient conditions to 1000 pounds per square inch gage and 1000 degrees Fahrenheit using a steady-flow calorimeter operating on an open cycle. The results of the tests check the widely accepted spectroscopic data within 1 percent. Results regarding the validity of results, presentation of results, and limitations of the calorimeter are provided.
Date: December 1952
Creator: Schrock, Virgil E.
Partner: UNT Libraries Government Documents Department

Test and Evaluation of the Argonne BPAC10 Series Air Chamber Calorimeter Designed for 20 Minute Measurements

Description: This paper is the final report on DOE-OSS Task ANLE88002 Fast Air Chamber Calorimetry.'' The task objective was to design, construct, and test an isothermal air chamber calorimeter for plutonium assay of bulk samples that would meet the following requirements for sample power measurement: average sample measurement time less than 20 minutes. Measurement of samples with power output up to 10 W. Precision of better than 1% RSD for sample power greater than 1 W. Precision better than 0.010 watt SD, for sample power less than 1 W. This report gives a description of the calorimeter hardware and software and discusses the test results. The instrument operating procedure, included as an appendix, gives examples of typical input/output and explains the menu driven software.
Date: October 1990
Creator: Perry, R. B.; Fiarman, Sidney; Jung, Erwin A. & Cremers, Teresa
Partner: UNT Libraries Government Documents Department

Central Calorimeter Support Cradle Jack Failure Analysis

Description: The Central Calorimeter and its support cradle are to be supported by either hydraulic or mechanical jacks. If hydraulics are used, each support will use two hydraulically coupled jacks with two out of the four supports hydraulically coupled giving the effect of a three point support system. If mechanical jacks are used, all four points are used for support. Figure 2 shows two examples of jack placement on a 3.5 inch support plate. These two support scenarios lead to five jack failure cases to be studied. This report deals with the way in which a 0.25 inch drop (failed jack) at one support affects the stresses in the cradle. The stresses from each failure case were analyzed in two ways. First, stress factors, defined as quotients of stress intensities of the failed case with respect to the static case, were generated and then, hand calculations similar to those in Engineering Note 3740.215-EN-14 were done using the reaction forces from the failed case.
Date: April 10, 1987
Creator: Rudland, D.L.
Partner: UNT Libraries Government Documents Department

Some studies of data using the STAR endcap electromagnetic calorimeter.

Description: A series of studies was performed using data from the STAR detector at the Brookhaven National Laboratory's RHIC accelerator from collisions of protons at {radical}s = 200 GeV. Many of these involved the shower maximum detector (SMD) of the STAR endcap electromagnetic calorimeter (EEMC). Detailed studies of photon candidates from {eta} {yields} {gamma}{gamma} decay, and of {gamma} + Jet inclusive data and simulated events were performed.
Date: February 24, 2009
Creator: Krueger, K.; Spinka, H. M.; Underwood, D. G. & Physics, High Energy
Partner: UNT Libraries Government Documents Department

Analysis of barrel support saddles and forces between modules during assembly.

Description: As the Barrel Tile Calorimeter is constructed, the support saddles and the modules will be subjected to different forces, stresses, and deflections than when completely assembled. The purpose of this analysis is to examine the forces, stresses, and deflections acting on the support saddles and modules at various stages of assembly. The nominal weight of a barrel module is 20 tons. CERN Document number ATL-LB-EA-0001 'Summary of the Structural Analysis of the Barrel Support Saddles' describes in detail the structural analysis of the saddles and the completed barrel assembly. These calculations followed Eurocode 3. This paper examined several load cases which occur during the assembly of the Barrel. The following are the main conclusions: (1) The assembly is not stable until 18 modules are in place, and only then can the support cradle be removed; (2) The forces between modules are nominal and are far less that the forces in the completed cylinder with 64 modules in place and the cryostat load applied; (3) All of the stresses in the connections between modules are within acceptable limits; and (4) The interface between the cryostat supports and the cryostat move approximately 1.0 mm in the X and Y directions when the load of the cryostat is transferred to the Barrel.
Date: April 23, 2003
Creator: Guarino, V. J. & Physics, High Energy
Partner: UNT Libraries Government Documents Department

A proposal to study hard hadron - hadron collisions

Description: We propose a novel technique to study hadron-hadron collisions in which a significant fraction of the available energy is carried off in directions transverse to the beam. The technique is independent of the details of the final state so is ideally suited to searching for the jet-like particle clusters predicted by the parton model. The detector consists of a small calorimeter and several planes of 1 meter square proportional chambers.
Date: June 1, 1973
Creator: Frisch, Henry J.; Shochet, M.; Pilcher, J.; Winstein, B. & /Chicago U., EFI
Partner: UNT Libraries Government Documents Department

THE METASTABLE GAMMA PHASE IN URANIUM BASE MOLYBDENUM ALLOYS

Description: The high-temperature gamma phase of U is body-centered cubic and is stable to the melting point. Molybdenum is one of the body-centered cubic elements that tend to stabilize the gamma phase. The phase diagram, structure of the gamma ' phase, colorimetric measurements, thermal dilation and mechanical properties, electric resistiviiy, and effects of neutron irradiation were studied. (L.T.W.)
Date: October 1, 1956
Creator: Bostrom, W.A. & Halteman, E.K.
Partner: UNT Libraries Government Documents Department

Analysis of EB support saddles and forces between modules during assembly.

Description: As the EB Tile Calorimeter is constructed, the support saddles and the modules will be subjected to different forces, stresses, and deflections than when completely assembled. The purpose of this analysis is to examine the forces, stresses, and deflections acting on the support saddles and modules at various stages of assembly.
Date: August 13, 2002
Creator: Guarino, V.
Partner: UNT Libraries Government Documents Department

Analysis of the connections between modules in the EB.

Description: Over the last several years, calculations have been performed to find the forces that are acting between modules and on the support saddles in the EB. This paper examines these forces and calculates the stresses in the connections between modules. In the Tile Calorimeter, the modules are only connected at three points. First, at the inner radius there is a bearing connection to support the force in the phi direction. Second, at the outer radius there is a bearing connection in the phi direction and, finally, there is a bolted connection designed to withstand the radial load. Each of these connections will be examined separately.
Date: August 1, 2002
Creator: Guarino, V.
Partner: UNT Libraries Government Documents Department

Channel control ASIC for the CMS hadron calorimeter front end readout module

Description: The Channel Control ASIC (CCA) is used along with a custom Charge Integrator and Encoder (QIE) ASIC to digitize signals from the hybrid photo diodes (HPDs) and photomultiplier tubes (PMTs) in the CMS hadron calorimeter. The CCA sits between the QIE and the data acquisition system. All digital signals to and from the QIE pass through the CCA chip. One CCA chip interfaces with two QIE channels. The CCA provides individually delayed clocks to each of the QIE chips in addition to various control signals. The QIE sends digitized PMT or HPD signals and time slice information to the CCA, which sends the data to the data acquisition system through an optical link.
Date: September 26, 2002
Creator: al., Ray Yarema et
Partner: UNT Libraries Government Documents Department

Total x-ray power measurements in the Sandia LIGA program.

Description: Total X-ray power measurements using aluminum block calorimetry and other techniques were made at LIGA X-ray scanner synchrotron beamlines located at both the Advanced Light Source (ALS) and the Advanced Photon Source (APS). This block calorimetry work was initially performed on the LIGA beamline 3.3.1 of the ALS to provide experimental checks of predictions of the LEX-D (LIGA Exposure- Development) code for LIGA X-ray exposures, version 7.56, the version of the code in use at the time calorimetry was done. These experiments showed that it was necessary to use bend magnet field strengths and electron storage ring energies different from the default values originally in the code in order to obtain good agreement between experiment and theory. The results indicated that agreement between LEX-D predictions and experiment could be as good as 5% only if (1) more accurate values of the ring energies, (2) local values of the magnet field at the beamline source point, and (3) the NIST database for X-ray/materials interactions were used as code inputs. These local magnetic field value and accurate ring energies, together with NIST database, are now defaults in the newest release of LEX-D, version 7.61. Three dimensional simulations of the temperature distributions in the aluminum calorimeter block for a typical ALS power measurement were made with the ABAQUS code and found to be in good agreement with the experimental temperature data. As an application of the block calorimetry technique, the X-ray power exiting the mirror in place at a LIGA scanner located at the APS beamline 10 BM was measured with a calorimeter similar to the one used at the ALS. The overall results at the APS demonstrated the utility of calorimetry in helping to characterize the total X-ray power in LIGA beamlines. In addition to the block calorimetry work at the ALS ...
Date: August 1, 2005
Creator: Malinowski, Michael E. (Sandia National Laboratories, Livermore, CA) & Ting, Aili (Sandia National Laboratories, Livermore, CA)
Partner: UNT Libraries Government Documents Department

Validation and uncertainty quantification of Fuego simulations of calorimeter heating in a wind-driven hydrocarbon pool fire.

Description: The objective of this work is to perform an uncertainty quantification (UQ) and model validation analysis of simulations of tests in the cross-wind test facility (XTF) at Sandia National Laboratories. In these tests, a calorimeter was subjected to a fire and the thermal response was measured via thermocouples. The UQ and validation analysis pertains to the experimental and predicted thermal response of the calorimeter. The calculations were performed using Sierra/Fuego/Syrinx/Calore, an Advanced Simulation and Computing (ASC) code capable of predicting object thermal response to a fire environment. Based on the validation results at eight diversely representative TC locations on the calorimeter the predicted calorimeter temperatures effectively bound the experimental temperatures. This post-validates Sandia's first integrated use of fire modeling with thermal response modeling and associated uncertainty estimates in an abnormal-thermal QMU analysis.
Date: December 1, 2009
Creator: Domino, Stefan Paul; Figueroa, Victor G.; Romero, Vicente Jose; Glaze, David Jason; Sherman, Martin P. & Luketa-Hanlin, Anay Josephine
Partner: UNT Libraries Government Documents Department