Wisconsin CMS Notes

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CMS IN-1999/016 --- ACQUISITION

CMS Synchronization Workshop Conclusions

Status: OK
ftp://cmsdoc.cern.ch/documents/99/in99_016 - .pdflog - .pdf (99K) - .ps.Z (76K) + .ps
Submitter: W. Smith
Format: Word 98, Mac, Laserwriter 8.6.1, MacOS 8.5.1
Authors: W. H. Smith, U. Wisconsin, USA
Abstract: This document summarizes information gathered from the front-end electronics, trigger and readout systems about their design requirements and constraints for synchronization. This information was presented at the CMS synchronization workshop held at CERN on November 11. The contents of this document are preliminary and not to be taken as a final design It is hoped that this document will continue a dialog that will result in a coherent design for CMS synchronization across all subsystems.

RegistrationDate:990428

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Cathode Strip Chambers (CSC) Sag Measurements and Predictions

Status: OK
ftp://cmsdoc.cern.ch/documents/97/note97_066 - .pdf (144K) - .ps.Z (208K) - .warning + .ps
Submitter: D. Loveless
Format: LATEX
Authors: K. Kriesel, Physical Sciences Lab. Stoughton, WI, USA/ F. Feysi, Univers. of Wissconcin Madison, WI, USA/ D. Loveless, Univ. of Wisconsin Madison, USA/
Abstract: We describe the measurements of sag on P1A 2 layer prototype Cathode Strip Chamber and compare the results with calculated values. Using this information we predict the sag of P1 6-layer chamber with the present design for the aluminium frame, and compare this value to measured sag.

RegistrationDate:970808

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Six Layers P1 Cathode Strip Chamber Prototype (construction and first results)

Status: OK
ftp://cmsdoc.cern.ch/documents/97/note97_011 - .pdf (634K) - .ps.Z (1311K) + .ps
Submitter: O. Prokofiev
Format: WORD
Authors: D. Eartly, J.Korienek, J.Blomquist, O.Prokofiev, V.Razmyslovich, S.Sobolev, FermiLab, Batavia, USA/A.Bujak, L.Gutay, S.Medved. Purdue University, West Lafayette, USA/ L.Gorn, A.Korytov, G.Mitselmakher. University of Florida, Gainesville, USA/ D.Acosta, B.Bylsma, S.Durkin, J.Hoftiezer, P.Lennous, T.Y.Ling, C.Rush, Ohio State University, Columbus, USA/ D.Klem. Lawrence Livermore Laboratory, Livermore, USA/ Y.Bonushkin, J.Layter. University of California, Riverside, USA/ N.Bondar ,T.Ferguson, H.Hoorani, V.Sedov, Carnegie-Mellon University, Pittsburgh, USA/ R.Loveless, F.Feyzi. University of Wisconsin, USA/ A.Vorobyov. St.Petersburg Nuclear Physics Institute, Gatchina, Russia
Abstract: A full scale six layer Trapezoidal Cathode Strip Chamber Prototype of 0.8m x 1.2m x 3.3m was constructed and tested at Fermilab. The chamber construction and the first results on the chamber characteristics are presented in this paper.

RegistrationDate:970312

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Structural Analysis of the RF1 Endcap Disk

Status: OK
ftp://cmsdoc.cern.ch/documents/95/tn95_117 - .pdf (900K) - .ps.Z (574K) + .ps
Submitter: D. Loveless
Format: LATEX
Authors: L. Greenler, F. Feyzi, D. Loveless, WISCONSIN
Abstract: The endcaps for the CMS detector are toroid-shaped steel disks 14 meters in diameter and 600mm thick. The inner hole is 2.2m in diameter. Each disk is fabricated from large 600mm think steel blocks with are electroslag welded together. These disks will be subject to large magnetic forces up to 70 MN. The deflections and stresses caused by these forces on the RF1 disk are analyzed by a 3D finite element calculation. The result is that the maximum deflection of RF1 is 3.0mm and the maximum stress on the edge of the inner hole is 42M Pa.

RegistrationDate:950823

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CSC Panels: Flatness and Young's Modulus Measurements

Status: OK
ftp://cmsdoc.cern.ch/documents/95/tn95_094 - .pdf (82K) - .ps.Z (346K) - .rtf.Z (119K) + .ps
Submitter: A. Korytov
Format: WORD
Authors: C. Bradford, E. Dijak, D. Eartly, G. Mitselmakher, O. Oshinowo, O. Prokofiev, T. Sager, G. Teafoe, C.Wilson, R. Ziegler, FERMILAB, Batavia, USA/ J. Kelsey, A. Korytov, D. McCurley, MIT, Cambridge, USA/ F. Feyzi, R. Loveless,WISCONSIN, Madison, USA
Abstract: The results of measuring flatness and stiffness of large honeycomb panels (~3.3x1.2 m2) suitable for CMS Cathode Strip Chamber production are presented. Commertially made panels (PLASCORE) with 12.7 mm polycarbonate core and 1.6 mm G10 skins were found to meet our spec. on panel flatness of 0.25-0.30 mm over 0.6 m span (half chamber width). Their stiffness is in a agreement with an expectation based on G10 properties and panel geometry.

RegistrationDate:950711

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CSC Panels: Flatness and Young's Modulus Measurements

Status: PENDING
ftp://cmsdoc.cern.ch/documents/95/tn95_079 - NO FILES AVAILABLE
Submitter: A. Korytov
Format: LATEX
Authors: C.Bradford, E.Dijak, D.Eartly, G.Mitselmakher, O.Oshinowo, O.Prokofiev, T.Sager, G.Teafoe, C.Wilson, R.Ziegler, J.Kelsey, A.Korytov,D.McCurley, F.Feyzi, R.Loveless.
Abstract: The results of measuring flatness and stiffness of large honeycomb panels (~3.3x1.2 m2) suitable for CMS Cathode Strip Chamber nproduction are presented. Commertially made panels (PLASCORE) with 12.7 mm polycarbonate core and 1.6 mm G10 skins were found to meet our spec. on panel flatness of 0.25-0.30 mm over 0.6 m span (half chamber width). Their stiffness is in a agreement with an expectation based on G10 properties and panel geometry.

RegistrationDate:950629

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Magnetic and Structural Analysis of the CMS Endcaps

Status: OK
ftp://cmsdoc.cern.ch/documents/94/tn94_293 - .pdf (769K) - .ps.Z (713K) + .ps
Submitter: R. Loveless
Format: LATEX
Authors: F. Feyzi, R. Loveless, University of Wisconsin, Madison, USA
Abstract: The magnetic field for the CMS detector is displayed. From the magnetic field map the forces on the endcap disks are calculated. The maximum stresses and deflections of these disks are displayed. The magnetic fields in the region of the MF1A and MF1B CSC muon chambers are described as are the fields in the barrel MSn drift chambers. The radial and axial forces on the coil elements due to the magnetic field are shown.

RegistrationDate:941117

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Cathode Strip Chamber Capacitance

Status: OK
ftp://cmsdoc.cern.ch/documents/94/tn94_278 - NO FILES AVAILABLE
Submitter: R. Loveless
Format: WORD
Authors: R. Loveless, University of Wisconsin, Madison, USA
Abstract: The strip capacitance for cathode strip chambers is calculated using a finite element analysis program. Comparisons are made between aluminium and Nomex honeycomb cores showing the capacitance for aluminium cores is much larger.

RegistrationDate:941104

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Compact Muon Solenoid (CMS) - Barrel Yoke Central Section - Finite Element Analysis Report.

Status: OK
ftp://cmsdoc.cern.ch/documents/94/tn94_277 - NO FILES AVAILABLE
Submitter: R. Loveless
Format: WORD
Authors: F. Feyzi, Physical Sciences Lab. Stoughton, USA / R. Loveless, University of Wisconsin, Madison, USA / R. Wands, FNAL, Batavia, USA / J. Cherwinka, Cornell University, Ithaca, NY, USA /
Abstract: We describe the finite element analysis of the Compact Muon Solenoid (CMS) Barrel Yoke Central Section. Etc...

RegistrationDate:941104