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11-08-2004 AEM Dzero, M.Weber 1 Shut-down progress report Weeks 10 & 11 M.Weber

Shut-down progress report

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Shut-down progress report. Weeks 10 & 11 M.Weber. General. Mechanical, electrical, cryo work Emergency power switch maintenance Online computer server upgrades Online controls software upgrades Cooling the solenoid. Layer0 clearance measurement. - PowerPoint PPT Presentation

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Page 1: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 1

Shut-down progress report

Weeks 10 & 11

M.Weber

Page 2: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 2

General

• Mechanical, electrical, cryo work

• Emergency power switch maintenance

• Online computer server upgrades

• Online controls software upgrades

• Cooling the solenoid

Page 3: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 3

Layer0 clearance measurement

• 6.8mm radial space.Survey the clearance.- Is the overlap at Z=0 what we expect ? - Is there a restriction by previously not measured membranes ?

• The measurements have been successfully completed

• Clearance appears adequate for the installation of Layer 0

Page 4: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 4

Be

EC

SNEG

Page 5: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 5

Beam pipe re-connected

• Installed new SNEG pipe

• Re-made the joints SNEG to EC and EC to Be

• Restored dry atmosphere for SMT

• Currently pumping(Ion Pumps)

1E-8

Thu 0800

Page 6: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 6

Installed a Layer0 test module

• Connected to the ‘real’ PS, which have been previously installed during this shut-down

• Included into the Silicon readout

• Remapping of cables needed for Layer0 installation next year is partially done

Page 7: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 7

Silicon

• Silicon has been cooled to operation temperature• The SMT group was able to bring up the system

within hours(after several weeks without reading it out and touching (all) components of the readout, including removing all sequencers)

• Currently working on recovering HDIs, which failed during data taking

Page 8: Shut-down progress report

11-08-2004 AEM Dzero, M.Weber 8

Next

• Complete silicon work in the Calorimeter Gaps• Close the Gaps and survey• Close Toroid Irons and survey• Activate SNEG• Detector and Magnets checkout• Survey detector position