1. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 1 Irradiation in Karlsruhe The Karlsruhe-Probestations Procedure of Irradiation Results Future annealing studies

2. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 2 The Probestation

3. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 3 Cold measurements

4. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 4 The Software

5. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 5 Procedure Measurements of sensors –@ 20°C –@ rel. humidity < 30% – IV & CV – Ileak – Rpoly (2V) – CC (100Hz) – Pinhole (10V) – Rint (0-0,5V)>10G  – Cint (1MHz)

6. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 6 Procedure Bias connections for irradiation (conductive rubber & bonds) Irradiation –34 MeV-protons –Fluence Annealing –@ 60 °C & 80 min –Mistake: annealing of sensors in the envelopes Same measurements as before irradiation, but –@ -10°C & dew point << -10°C (39°C)

7. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 7 Alpha @ -10°C From literature

8. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 8 Leakage current before and after irradiation Guardring connected (for defined Volume) Increase of leakage current as expected Breakdown voltage >1200V

9. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 9 Depletion voltage before and after irradiation Annealed @ 60°C and 80 min But in the envelopes !

10. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 10 Leakage current after Irradiation Low Fluence High Fluence Increase of leakage current depends on fluence as aspected

11. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 11 Rpoly after irradiation 0V 1V 100V No dependence on bias conditions !

12. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 12 CC after Irradiation 0V 100V 1V No dependence on bias conditions !

13. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 13 Cint after irradiation 1V No increase of Cint seen

14. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 14 IQC-ramps

15. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 15 Annealing curves

16. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 16 Annealing @ 50°C ? Problem of annealing studies @ 60 °C high stability of temperature needed Effects of heating up and cooling down become important Problem of annealing studies @ 40 °C long time constants T[°C]-10-701020406080 aa 306d180d53d10d55h4h19min2min b1/1341/781/231/51161741490 T[°C]-1001020406080100 yy 516y61y8y475d17d1260min92min9min b1/3961/471/61/129544743076650

17. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 17 Time constants @ 50°C Fit from values in the Moll-Thesis: Beneficial annealing: 65 min Reverse annealing: 5162 min Annealing steps: 15 min ?

18. 14.3.2002Irradiation Workshop KarlsruheA. Furgeri 18 Conclusions Measurements @ -10°C after irradiation Annealing without envelopes ! No dependence of stripvalues from bias conditions Next irradiations without bias ?