VELO Testbeam 2008

Commissioning

• ELog of the TestBeam.

Preparation

Organization and Meetings

• An MOU exists to pursue a VELO testbeam at Fermilab in 2007/2008. In addition we may attempt to do a "zapping" test at CERN.
• A 1st version of the needs and planning: planning.
• A proposal by Tony and Gianluigi for the possible measurements.

• The webpage of the MTest Beam Facility can be found here.
• Instructions to get a FNAL Visitor ID : this link.

• General timeline, as of April 15th 2008.

• JC's summary of MT6 TestBeam Facility.
• Marina's presentation to the VELO meeting of April 11th.

• Indico page to the meetings : meetings. They are registered under the name "VELO FNAL testbeam". Meeting every Monday, 10am EST, 4pm CERN time.

DAQ Hardware

• The summary of hardware needs, as of May 28d 2008. The dummy module arrived at FNAL, the two irradiated sensors and the 3D sensors will arrive on May 29th and 30th. The electronic boards (1 TELL1, 2 RPT) have been sent and should arrive on May 30th.

• The specs of the NTC thermistors.
• JC prepared a diagram showing the routing of the main cables between the hut, the alcove and the counting room (April 1st 2008).
• Lars' presentation at the VELO Workshop, Dec 13-14th 2008

Mechanics

• 080430: Mechanical configuration v1 ppt.
• 080430: Mechanical support and rotation for VELO modules

• A study by JC on the optimization of the telescope.

• Diagrams of the dummy PCB and of the connectors layout for the feedthrough, from Tony S. The connectors which go to the repeater card are 50 way male D_Subs but we normally interpose a 4 inch length of ribbon cable with a male at one end and a female at the other between the dummys and the repeaters as a strain relief. As we want to do a 90 degree turn between the module and the repeater, we could do this with the ribbon cable.
• Other schematics : sensor holder and kapton cables.
• Connected module.
• CM's diagrams : 1 and 2.
• Sketch of the cooling blocks on the module.

• A picture of the former telescope, just to get an idea... The box is empty right now.
• A picture from Tony A. of a module with short cables and feedthroughs.
• The LHCb note on the resolution as a function of rotation angle. Chris has explained the relevant figures of the paper here.

Data Analysis

• A summary-datafiles.xls: summary of data taken during FNAL test beam run on June 2008
• summary_datafiles.html: web version

Twiki page for analysis 2008

Documents related to beam loss scenarios and zapping tests carried out by other collaborations

Beam Loss Scenarios, Damage at previous experiments

• cdfdamage.pdf: CDF beam incident
• d0beamloss.pdf: D0 beam incident
• fermilab-conf-05-606-e.pdf: CDF radiation experience
• Joint LHC Machine-Experiments Meeting on Experiment protection from beam failures

Zapping tests, past present and future

• cmsbeamloss.pdf: beam loss stress tests of CMS modules
• wolfram.pdf: laser and zapping tests of ATLAS modules

-- GwenaelleLefeuvre - 16 Jul 2008