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Irradiation of 3D sensor on micro-carrier board in Birmingham
- Write action items . Philippe
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Dear Philippe,
Two possible dates - 28th or 30 September. This is in first week of term, but as far as I can see I should have no teaching on those days and can do the dosimetry.
The beam intensity can be anything from a few hits per sq. cm per sec to the full beam current. We have a 2 mm tungsten collimator hole ( 100 microns to 1 mm) with a tungsten scattering foil ( 25 microns upwards) which we use to blow the beam up to get uniformity and reduce the rate. The higest beam current is 30 microamp ( 2E14 per sec) over a disc of diameter 25 mm. It can be reduced to 0.1 nA and remain stable. It is best to use the scattering foil to ensure good uniformity over a sq cm area. I have many plots and figures that I will put together.
Standard energy is 29 MeV - this will be 25 MeV if we use a scattering foil and put the samples in a cryostat. We have a portable cryostat that can cool the samples to -40 Centigrade if necessary.
We can probably leave samples at Bormingham to cool. They might let us take them to Manchester if we bring suitable shielding for transport. Will have to check. Can send to CERN when they are cool enough for transport. Will have to check the rules on this.
We will have to pay for the accelerator - 1000 pounds per day - so we should make sure we use the time well. Plenty of samples and measurements.
If we had a readout system for the device, I can lower the beam rate to a few hits per sq cm so that pulse heights could be recorded - no trigger. Not sure we can get this ready in Manchester by this date.
Best Regards,
Steve
Todo list
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Hardware modifications on one or more TPLL for use with the EUDET telescope
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- TPLL board from Manchester/Cinzia is at CERN and can be modified.
- Georg has all components at cern to do the modification
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Todo list
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Hardware modifications on TPLL for use with the EUDET telescope Jens
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Suggestions is to modify one board that can be used with the EUDET all the time plus one spare. Proposed to make a new board but apparently there are new boards with strange problems according to Jens and so we need to modify an existing one. The modification takes about 1 week.
- Which TPLL boards are modified?
Modification of the Oslo reconstruction code
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According to Ole this is a very simple change to identify the chips.
Modify the BAT online monitoring
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After discussion with Jens it seems like the best way to handle it is to modify the BAT online monitoring in order to keep TurboDaq software intact. We need to identify how the data stream from the module is read and identify how to separate up the chips. The online monitoring display should be re-usable. This also falls into the same logic as Goergs modifications of the eudet-MCC integration.
The work can hopefully be done by BAT expert or Pelle.
Implement the ATLAS module/MCC in the EUDET framework Georg
Mail from Georg:
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Current status (7/9/09) is that Georg has successfully read-out a module and also implemented this in the online software. Using a source one can see random correlations in the various chips. The method used is to separate the chips in the module streams in the online software.
The whole system (eudet+MCC) is according to Georg testable on a read-out chain without the actual telescope.
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MCC tests at CERN Alessandro & Pelle
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