Electrical Testing during Barrel integration

1
Electrical Testing during Barrel integration

• Doug Benjamin
• Duke University

2
Discussion points

• Two testing phases
• During module insertion into space frame (either
  layer by layer or sector by sector)
• ? Able to remove modules or boards relatively
  easily at this stage
• Final testing after all modules installed, final
  manifold added and the outer cylinder attached

3
Testing During first phase

• Test 1 end of a module at a time
• HV test of module with ArCO2
• Threshold scan
• Check if the electronics works
• not 100 certain if wire connected to electronics
• Source scan Cadmium 109
• Source can shine through entire type 3 module
  see of all straws are connected to electronics

4
What do we need for this testing?

• Cables and patch panels between AR boards and
  Rods.
• Can we use the preproduction cables between AR
  boards and PP2? Need the final PP2 design. If
  Nandor is not designing AR boards Can he do
  this?

5
What do we need for this testing?

• HV system
• CAEN crates
• DCS control software
• Production fuse boxes?
• Interface box between SHV connectors and fuse box
  connectors.
• LV system ?

6
What do we need for this testing?

• Cooling
• Use chiller of building need controller and
  flow regulators for integration testing
• Callahan chiller and control system for system
  testing (2 sectors) and 2004 beam test

7
What do we need for this testing?

• Software
• Board on Module testing
• Standalone board acceptance tests
• Working boards, acceptable performance?
• Straw- electronic channel mapping
• Module performance
• User-friendly, open system
• Common interface with analysis tools. New people
  on board knows what to look for and how, quick,
  easy and adaptable by user..
• Accumulate experience for ATLAS TRT integrated
  monitoring

8
What do we need for this testing?

• People
• Experts Penn (Toni, Mitch already working on..)
• New person Ben LeGeyt (BS physics) will also
  help with system testing
• I am planning of other members of the TRT
  collaboration to participate in shifts if needed.

9
Barrel system tests

• Critical item to solve as soon as possible -
  grounding and shielding
• Need to start cooling plate fabrication.
• test grounding clip schemes initially with type
  1 modules
• Scope will have adiabatic growth as new boards
  are delivered must be done quickly though
• Cosmic rays?

10
Other points

• Not much time
• Need write meaningful specifications
• Can not steal equipment from SR-1 for 2004 test
  beam
• Need to plan to do both barrel assembly and the
  2004 test beam - Resource limited people and
  parts!