AMS Geneva Memo

How to qualify a ladder using the Geneva PC card system

1. Read all the documentation already available about this particular ladder
2. The ladder will be visually inspected.
3. The ladder will be put in the appropriate jig for electrical test if this not already the case.
4. Test the direct and reverse bias currents using the ETH tool.
5. Carefully connect the ladder to the Geneva PC test system using special cables and the special dark box.
6. Switch on the Geneva PC test power supply and test that the ladder stand bias using a voltmeter, write this number in documentation.
7. Use SCOPE program to look for pathology.
8. Make sure that you can read the temperature sensor, and write down the two electrical names of the ladder in the documentation.
9. Use the CALIB program to create calibration file.
10. Copy the numbers on the screen to the documentation.
11. Use PAW to look at the calibration file.
12. Save the calibration file.
13. Print the calibration plots and include them in the standard documentation package.
14. Use SCOPE program to look if pedestal substraction make sense.
15. Use CLUSTER program with 1000 random trigger and look that the number of clusters found per event is reasonable (lets say less than 0.5 cluster per event).
16. Have a trained physicist look at the data and take a decision about the ladder. For the moment the trained physicists are: nobody. (sorry we have to see some ladders first before training people)
17. ftp anonymous to schp5.unige.ch, cd to ams subdirectory, cd to your institute subdirectory
18. ASCII put the calibration file there and give it the correct name according to the correct naming sheme
19. send a mail to Nicolas.Produit@cern.ch explaining what is this calibration file
20. I will put the info in the database
21. Sometimes all this info will be sorted out and put in an official AMS database.