1. UK-V MeetingPaul John Dervan Irradiation's 2003 Update Paul Dervan Craig Buttar, Simon Dixon, Chris Grigson, Richard Nicholson and the irradiation team UK-V Meeting, RAL 15th July 2003 Latest News Irradiation to date 2003 schedule Contents

2. UK-V MeetingPaul John Dervan New Irradiation Lab New lab on the ground floor of B.186 New lab is up and running All module tests can be carried out there:  Electrical Stand  Temperature controlled freezer (to be done)  Nitrogen Supply This improves safety, by irradiated modules all being in the same, known place

3. UK-V MeetingPaul John Dervan New Beam Target New Rotary target robot Just up-stream of cool box Scintillators and films in 5 positions Monitor the beam position by new Camera mounted on the ceiling of T7 (next slide) No more doubts about beam position! (Not that there ever was!) Also, prototype beam profile monitor in shuttle. Will be extended to SCT box after tests

4. UK-V MeetingPaul John Dervan New Camera New camera in the area Can be remotely moved on 3 axis So beam can be seen on the scintillator on the front of the box and on the rotary target

5. UK-V MeetingPaul John Dervan Schedule *** *** High fluence run (4 spills per cycle) for pixels

6. UK-V MeetingPaul John Dervan P1A (19 th May – 6 th June) Barrel 20220040200041 (from LBNL)Barrel 20220380200006 (from SCAND) High gain spread chip Oscillates

7. UK-V MeetingPaul John Dervan Fluence for P1A Easy run. No major problems with the beam. 2 spills per Super-cycle day/night. 20GeV beam due to broken transformer in the septum that extracts beam into the East Hall.

8. UK-V MeetingPaul John Dervan Module Currents for P1A Module B0041 tripped at about ½ fluence. Was unable to re- power it so it stayed un-powered but biased for the rest of the run.

9. UK-V MeetingPaul John Dervan High Gain Spread Chip Study Before Irradiation After Irradiation

10. UK-V MeetingPaul John Dervan High Gain Spread Chip Study BeforeAfter ChipGainRMSGainRMS M053.01.2431.52.00 S152.11.0831.81.48 S254.48.8932.51.50 S352.31.3627.61.63 S450.41.1726.61.37 E550.71.4728.31.90 M850.61.1527.71.36 S948.91.1229.61.76 S1050.81.0325.91.61 S1148.51.3120.91.26 S1249.91.2524.91.45 E1354.01.0627.92.16 Barrel 20220040200041 had a high gain spread chip (S2), before irradiation, 8.89 After Irradiation this had reduced to 1.50. But only one module so far! Another module with a high gain spread chip is being irradiated in P1B-P1C (now). Both these modules will go into the next test-beam

11. UK-V MeetingPaul John Dervan P1B-P1C (25 th June – 11 th July) Barrel 20220040200018 (Oscillates) Barrel 20220170200447 (Gain Spread) Forward 2022013000002 Geneva

12. UK-V MeetingPaul John Dervan Fluence for P1B-P1C Not reached fluence yet. But lots of problems with the PS and accelerator complex. Only one spill for most of the run, until the end where we got 2 to get us to target fluence.

13. UK-V MeetingPaul John Dervan Module Currents for P1B-P1C Currents look good. No problems with the modules in this run (so far).

14. UK-V MeetingPaul John Dervan Summary Annual service of T7 was done in January New rotary target station installed and working New Camera is installed and working well New lab is ready The high gain spread on chips seems to go away with irradiation. But only seen one module! Oscillating modules will be studied as soon as possible Third Irradiation of 2003 starts on 25 th July.