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Summary of ANSYS and Strain Gauge Results for the EC Calorimeter OH and MH Modules

Description: The OH and MH modules of the EC calorimeter consist essentially of metal boxes containing calorimetry plates. These plates can contribute to the module behavior only in compression, with this effect being enhanced if the plates are compressively preloaded against the skin of the box prior to assembly. The finite element method can be applied in the analysis of these modules. Its advantages are: 1. The structural components can be modeled with less simplification than beam theory allows. The ang… more
Date: June 9, 1987
Creator: Wands, R.; Weber, K. & Zurawski, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cryostat "UV" Relief Valve Selection and Process Flow

Description: This report describes the selection of the relief valves for the D-Zero cryostats. The selection was based on the flow requirements calculated in D-Zero engineering note 3740.214,224-EN-6 under fire conditions (1200 F, no vacuum) for the central cryostat; 264 SCFM. This value was calculated from section 5.3.5 of 'Pressure Relief Device Standards; S 1.3-Compressed Gas Storage Containers', published by the Compressed Gas Association, Inc. The flow calculated above is far greater than the required… more
Date: August 11, 1987
Creator: Mulholland, G. T. & Wintercorn, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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I.F.H. Quarter Module Lifting Fixture

Description: The main purpose of this report is to explain the procedure for lifting the I.F.H. quarter module from a 'prone' position to a 'standing' position and then into the liquid nitrogen test vessel. The main objective for the design of the lifting fixtures was simplicity. The fixtures are to be made of .75 inch thick stainless steel plates which is a stock item for the steel companies. The fixtures are stainless steel so they will be able to keep their structural integrity when immersed in the liqui… more
Date: April 28, 1987
Creator: May, M.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CC Cryostat Cooldown Test Results

Description: A cooldown of the inner vessel of the Central Calorimeter cryostat to 77K was performed during the week of October 12 in order to 'cold shock' it, i.e., to check for insulating vacuum integrity with the inner vessel cold. The conclusion from our test results is that the vessel withstood the cold shock, and the insulating vacuum remained good. Cooldown was analyzed by J.D. Fuerst in D0 note 3740.000-EN-107, dated August 19. Warmup was analyzed by T. Peterson and B.Fitzpatrick in D0 Engineering N… more
Date: October 16, 1987
Creator: Peterson, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Summary of EC Superelement Results for OH Inter-Module Connecting Forces

Description: The purpose of this report is to summarize the OH module connecting forces found as a result of the super-element modeling of the EC internal module structure. Although not presented here, this approach can also provide MH connecting forces and assembly deflections. This report includes only information on the OH connecting forces for various assumed connector schemes. The super-element machinery is in place to model other connector ideas, and provide information on overall deflections, MH conn… more
Date: May 26, 1987
Creator: Wands, R.; Weber, K. & Zurawski, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flexible Support Test Procedure and Results

Description: Upon completion of the fabrication process, the four central calorimeter cryostat flexible support assemblies were sent to Construction Technology Laboratories (CTL) in Skokie, IL, where the required tests were performed for Richmond Lox prior to the installation of the stanchions in the cryostat. These tests were to simulate the simultaneous axial and transverse loading experienced by the stanchions when the cryostat undergoes the cool down process.
Date: December 4, 1987
Creator: Kurita, C. H.
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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Flexible Support Liquid Argon Heat Intercept

Description: A device in the flexible support system for the Central Calorimeter is the Liquid Argon Heat Intercept. The purpose of this apparatus is to intercept heat outside the inner vessel so that bubbles do not form inside. If bubbles did happen to form inside the vessel, they would cause an electric arc between the read-out board and the absorption plates, thus destroying the pre-amplifier. Since this heat intercept is located in the center of the flexible support, it must also support the load of the… more
Date: May 18, 1987
Creator: Rudland, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flexible Support Stanchion

Description: Figure 1 shows the assembly drawing of the Central Calorimeter Cryostat Flexible Support Stanchion. Figures 2 and 3 show the Flexible Support STanchion in detail. These Stanchions support the cryostat safely, reduce the heat load to the cryostat from the ambient by a factor of more than ten, provide a spring like action that reduce the loads created by thermal contraction of the cryostat and position the cryostate accurately. Table 1 shows all of the details of the Flexible Support system for t… more
Date: May 11, 1987
Creator: Rudland, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of OH Bolted Ear Connection

Description: The D0 endcap calorimeter outer hadronic (OH) modules play a major structural role in the calorimeter assembly. The disrete modules, once connected together, form a ring within which other massive calorimetry will reside. It has been proposed that the connection of the OH at the downstream end be accomplished by extending the downstream endplates in the radial direction to form 'ears', and then through-bolting between adjacent ears as shown in Fig. 1. A single 2 1/4 in. dia. bolt is used, and p… more
Date: December 30, 1987
Creator: Wands, Bob
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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RTV 21 Displacements

Description: A seal is needed for the cover of the Nitrogen Test Vessel in order to prevent leakage of the N{sub 2} gas. This seal is to be molded out of RTV 21. In this experiment, the Modulus of Elasticity of the RTV was sought after, and the displacements of the RTV due to various stresses were measured to see if they were large enough to provide a tight seal between the vessel and its cover.
Date: February 4, 1987
Creator: Kurita, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Calculations Pertaining to Central Calorimeter Cooldown Rate and Temperature Gradients

Description: For a first-pass look at how the central calorimeter module assemblies cool down in the CC cryostat, some 'hand' calculations of free convection from the end plates were done. A local convection coefficient for heat transfer from the vertically oriented end plates to the argon gas is estimated to be about 1 x 10{sup -3} W/cm{sup 2}K. Even for free convection, flow is turbulent between the end plates and cryostat wall. Total rate of heat removal from both ends of the assembly at 300K to lOOK arg… more
Date: August 6, 1987
Creator: Peterson, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Central Calorimeter Transporter Cart Design

Description: The purpose of the cryostat transporter cart is to provide a means of rolling the CC cryostat in and out of a building, and to proyide a means of support for the cryostat while it is being worked on. The constraints on the cart are: (1) There should be a minimum amount of clearance between the cryostat and the ground, in order to be able to roll the cart and cryostat into a building; (2) The cart must be able to support the weight of the cryostat as well as the weight of approximately 4,000 gal… more
Date: September 22, 1987
Creator: Weber, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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OCH Spacer Design

Description: The purpose of the OCH module spacers is to keep the given dimension of .224-inch between the 1.83-inch absorber plates. This distance is determined by two liquid argon gaps of .09-inch each and a readout board of .044-inch. The spacer should be made out of a material that would give a minimum thermal contraction movement. Also the dimension of the spacer will be determined dependent upon the load applied to the spacers and the strength of the material chosen. Considering both thermal contracti… more
Date: February 4, 1987
Creator: Kurita, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design Review of the D0 Central Calorimeter Module Assembly Calculations Appendix to Fermi National Accelerator Laboratory

Description: This paper has the following chapters: (1) CC-MOD-01 - Review and Verification of the Finite Element Analyses; (2) CC-MOD-02 - Main Support Beam and Strap; (3) CC-MOD-03 - Connection Pin Loads; (4) CC-MOD-04 - Endplate Bracket Pin Hole Stresses; (5) CC-MOD-05 - Endplate Bracket Bending Stresses; (6) CC-MOD-06 - Module Endplate Pin Hole Stresses; (7) CC-MOD-07 - CH Module Bending and Buckling Analysis; and (8) CC-MOD-08 - Bearing Loads on Transition Pieces and G-10.
Date: November 1, 1987
Creator: Rosenfeld, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Signal Feedthrough Box Weld Procedure

Description: The procedure is as follows: (1) Firmly bar clamp the box together in all directions. When all directions have been secured, tack weld each outside seam of the box in 4 or 5 places along it's length. Remove clamps and proceed to weld all outside seams. Care should be taken that the maximum weld cross section does not exceed 1/16-inch x 1/16-inch. (2) To help stabilize the metal as it cools, we will install all slot plugs, (MC-223665), and one side cover plate, (MD-223637). Inside welds for this… more
Date: November 12, 1987
Creator: Ferry, Bob
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D-Zero Calorimeter Multiplan

Description: This short report explains the parameters, and their basis, of the D-Zero calorimeter multiplan spread sheet Macintosh Multiplan worksheets have been found to be a valuable asset to the D-Zero design effort. The spread sheet contains parameters (constants) and results that come from the parameters. The full effect of changes in D-Zero calorimeter parameters can be calculated quite easily with Multiplan. When a change in a parameter is made, any results that pertain to that parameter automatical… more
Date: June 15, 1987
Creator: Wintercorn, S.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CC Cryostat Vapor Pressure Thermometers

Description: Vapor pressure thermometers will be used to measure the temperature or the liquid argon in the cryostat at two different levels. One bulb will be positioned near the top of the vessel, and a second bulb will be located near the bottom of the vessel. The volume of the bulbs is dependent upon the charge temperature and pressure chosen, the temperature range of the thermometer desired, the size and length of tubing used, and the warm volume involved.
Date: October 1, 1987
Creator: Kurita, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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