ATLAS Upgrade RandD - Mechanical Studies

This page collects information on ATLAS Upgrade R&D mechanical studies at LBNL or under contract to LBNL

Presentations and Notes

Bill Miller

• March 2006 notes
• April 2006 notes
• Exchange on going to 8mm tube
• Presentation at STD6 September 2006
• Note on thermal solutions November 2006
• Notes from late November 2006
• Tube stress notes and update and comparison with measurements.
• January 2007 notes on thermal performance(Jan. 20)
• Notes on 10 chip thermal performance Feb. 19,2007 and Mar. 1,2007
• Note on thermal runaway(March 2007).
• Thermal analysis vs facing thickness(May 2007).
• June 2007 update of thermal runaway and first full 10cm model thermal results.
• Thermal prototype FEA Nov. 2007
• Calculations of pressure drop and film coefficient for 4.9mm flattened tube and 4.9mm round tube and documents for CO2 are here and here and summary
• Notes on thermal performance Nov/Dec 2007 thermal runaway and nominal design, long strips and bridged hybrid.
• February 2008 update on bridge thermal analysis here and here.

Carl Haber

• STD6 September 2006
• Presentation to thermal working group at Liverpool and presentation on stave concept and studies.
• April module integration meeting.
• MIWG March 2008.

Gil Gilchriese

• Short summary status at informal workshop at LBL on September 16, 2006
• Prototype tube bending and flattening sample trials
• Input to Carl's talk at July 2007 upgrade meeting at CERN.
• Presentation at robotics meeting at LBNL on August 3, 2007
• Presentaton at MIWG meeting Nov. 12, 2007
• Presentations at US meeting Nov. 19, 2007 on mechanics and on review.
• Preliminary cost estimate(v0.1 Jan. 22, 2008) for barrel and endcap stave-like structures here

Phone and other meetings

• Presentations at LBL-BNL phone meeting of July 5, 2006
• Presentations at LBL-BNL phone meeting of September 26, 2006
• Minutes/actions of meeting of October 18, 2006 of Gilchriese, Haber, Miller and LBNL technical staff
• Presentations of Miller,Haber,Phung and Gilchriese at Feb. 6-7, 2007 US Stave meeting at LBNL
• Presentations at US upgrade R&D meeting May 3, 2007 in UC Santa Cruz
• Bi-weekly phone May 21, 2007.
• Bi-weekly phone June 4, 2007. Bi-weekly phone June 14, 2007. Bi-weekly phone June 25, 2007.
• August 3, 2007 on robotics
• Bi-weekly phone Sept. 6, 2007 Phone meeting Sep. 24, 2007
• Presentations at Valencia Workshop Dec. 2007 on Integrated stave and mechanics
• Update at MIWG February 2008 here.
• Material for stave review June 5-6, 2008 in folder here. Development plan. US prototype plan.

Proposals

• June 2006 R&D Proposal to ATLAS
• Draft June 2006 report and proposal to US ATLAS on stave project
• Draft June 2006 report to US ATLAS on mechanical/cooling studies

Drawings and Procedures

Documents and drawings related to the fabrication of the prototype staves.

Documents

• Draft outline of stave tooling concepts

Drawings and related models for tooling.

• Prototype Stave Drawings archive -older versions

• Latest drawings for flattened tube prototype amd Solidworks models.

• Latest drawings for round tube prototype.

• 10 cm stave preliminary drawings.

Instructions for viewing models are here. The model files are currently in this folder [1]. Download this file and open with viewer(after you download it).

Materials and Properties

• Bryte link, K13D2U, EX1515.
• Ultracor generic link.
• Graphite foam info.
• POCO foam/HTC. Low density properties here.
• Koppers KFoam. Low density properties here.
• K&S tubing.
• Folder about developing high thermal conductivity foam.
• SE4445 link.

Stave Prototype Fabrication and Test

• Assembly tooling pictures(not organized, just collection)
• POCO foam-4.7mm tube-short sample trials 2/1/07.
• Layups and test results
• CN60 foot-long assembly prototype pictures, measurements
• First K13D2U foot-long with closeouts. Survey. Deflection measurements Thermal setup and results.
• First full-length prototype pictures. Deflection measurements. Deflection predictions. Weights. Survey
• Foot-long prototype with POCO foam and 4.8mm OD tube.
• Foot-long prototype with POCO foam and 2.8mm OD tube.
• Detector removal photos and studies.

Stave Support Structure Studies

• Model of shell/ring stave support(need to download viewing program under Drawings).
• Layout at R=60cm, indicating problem of minimal material between staves.
• Simple aluminum shell with and without ribs - deflections(April 2007)

See also presentations at May 3, 2007 (link above under Presentations)

Pixel Upgrade Support/Cooling Structure Studies

• Parameters of the existing detector
• B-layer replacement layout studies.
• Material for Sept. 2007 B-layer replacement workshop.
• Presentations at Valencia workshop(December 2007) here and here.
• 1st prototype stave with low density, thermal foam here.
• Mockup of monolithic structure - folder here.
• Presentation at pixel upgrade meeting Feb 2008 here.
• FEA notes on thermal performance of inside/outside monolithic option here.
• Proposed dimensions of modules, sensor wafers and outer integrated stave layout(use smaller chip version for layout studies) here.
• SLHC pixel data communication simple proposal here.
• US pixel mechanics meeting(password pixmech) March 17, 2008 here.
• SLHC barrel support/cooling conceptual sketches here.
• Outer barrel, stave layouts here and here. Step file of 4-chip module here.
• Detector heating assumptions here. Based on radiation levels summarized here. See also presentations by I. Dawson here and here.
• Presentation at April 2008 pixel upgrade meeting here.
• Detailed IR results for pixel stave prototypes here.
• Link to US Pixel Upgrade Workshop May 22-23(2008) here.
• Link to Pixel Upgrade Workshop May 29-30(2008)here and to presentation.