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Here is a to-do list for the preparation of the August (Aug 4:8am - Aug 6:7am)  irradiation period at LANL.

  1. Design of the setup and cooling box: Marco: DONE
  2. Fabrication of the setup/cooling box: Marco and Jim: to start on Monday 13 July.
  3. Fabrication of the micro carrier boards: Chris: being done. Do we have a planar sensor to assemble in the same way?
  4. Test of the assemblies with TurboDAQ: Pelle/Philippe/Su Dong.
    1. Are calibration and threshold scans sufficient?
    2. Can we use an external radioactive source?
    3. Are all pixels supposed to be active so that one doesn't need to mask out those didn't bump to FE and just discard the data from uninstrumented region, or some pixel mask need to be prepared to allow the tests to run sensibly ?
    4. write down in detail a list of exactly what characterization tests we should be doing and documenting
  5. How do we measure/monitor the temperature inside the cooling box? Do we need to purchare temperature probes? How do we install them, and how do we read them out? Are the cables long enough to run up to the control room? Marco and Chris.
  6. Bias supplies to the sensors: how many do we need (1 for all sensors?): Chris.
    1. Do we have it/them? Can we install it in the irradiation room?
    2. Shouldn't we have some online current measurement and some way to record them with dose/time ?
    3. Initial idea was to set a constant bias voltage and not adjust it.
  7. How do we ship the mechanical support/cooling box and sensors to LANL? How long does it take to ship it?
  8. Some of us will have to take classs on Monday morning. How do we register? Philippe contacted Martin Hoefferkamp.
  9. Installation of the setup on Monday 03, afternoon: Check with Martin: Philippe/Chris.
  10. Align the assemblies with respect to the Cu shielding. All.
    1. how to verify the alignment is right ?
  11. Align overall support with respect to the beam. All.
    1. how to verify the alignment is right ?
  12. Decide on irradiation levels: assuming 7 assemblies are built, we should keep one un-irradiated, for reference. Proposal:
    1.   1 3D to 1E15
        2 3D to 5E15
        1 planar to 5E15
        1 3D to 10E15
        1 planar to 10E15 
        1 3D to 15E15  (this is probably sufficienct even for sLHC) .
  13. How is the accumulated dose measured? Do we just rely on the beam measurements (intensity and run time)? Can we have some foils located in the box near the sensors? LANL probably has some passive dosimeters.
  14. Irradiation steps: Irradiation steps: should all boards in to start then pulling ones out after reaching their dose, or gradually adding boards with smaller needed dose: probably start will all boards, for alignment reasons.
  15. Store sensors after irradiation for cooling down and ship them to SLAC (see below), together with the cooling box. The Cu block should stay there.

We also have to take care of the shipment of the sensors. The idea is to ship the assemblies back at SLAC for tests with TurboDAQ and then ship them to CERN for beam tests in October. The assemblies will be activated during the irradiation. I have been in contact with Jim Allan (jallan@slac.stanford.edu) from SLAC and Laura E. Wolfsberg (lwolf@lanl.gov). After irradiation, sensors have to kept cold. We will use dry ice during shipments. According to Jim, it's not a problem to ship the sensors to CERN. After the irradiation, we may have to wait a little while before being able to handle the sensors.

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