Irradiation n i k r s o s W e r g o r Harrison - PowerPoint PPT Presentation

Irradiation n i k r s o s W e r g o r Harrison Schreeck, Botho Paschen, Philipp Wieduwilt p 2 nd Institute Of Physics, Georg-August-Universität Göttingen 21/02/19 DEPFET Lab Meeting 1/18

Analysis of Irradiation Data Threshold voltage  21/02/19 DEPFET Lab Meeting 2/18

Analysis of Irradiation Data Threshold voltage  21/02/19 DEPFET Lab Meeting 3/18

Analysis of Irradiation Data Threshold voltage 21/02/19 DEPFET Lab Meeting 4/18

Analysis of Irradiation Data Threshold voltage 21/02/19 DEPFET Lab Meeting 5/18

Analysis of Irradiation Data Threshold voltage 21/02/19 DEPFET Lab Meeting 6/18

Analysis of Irradiation Data Voltage/Current evolution  Step from 50 krad to 100 krad 21/02/19 DEPFET Lab Meeting 7/18

Analysis of Irradiation Data Voltage/Current evolution  Step from 200 krad to 500 krad 21/02/19 DEPFET Lab Meeting 8/18

Analysis of Irradiation Data Voltage/Current evolution  Step from 18400 krad to 21600 krad 21/02/19 DEPFET Lab Meeting 9/18

Analysis of Irradiation Data Incident on 27.01.19  Some incident happend at 5.8Mrad  Good pedestal at 12:03, bad at 12:13  Same VnSubIn, same Gate-On 21/02/19 DEPFET Lab Meeting 10/18

Analysis of Irradiation Data Incident on 27.01.19  21/02/19 DEPFET Lab Meeting 11/18

Analysis of Irradiation Data Incident on 27.01.19  Pedestals could not be recovered by changing various DCD settings and matrix voltages  Decided to power cycle the module  After the power cycle we saw different switcher and clear voltages:  Clear-on: ~25mA --> ~40mA  Sw-Sub: -10mA --> -23mA  In Addition some gates seem to be „broken“ (see source scans) 21/02/19 DEPFET Lab Meeting 12/18

Analysis of Irradiation Data Source scans  MPV evolution MPV is decreasing (Gate-On adjusted!) CCG at 0V Clear-Off Slowly increasing 21/02/19 DEPFET Lab Meeting 13/18

Analysis of Irradiation Data Source scans  MPV evolution MPV is increasing (Gate-On and ccg adjusted!) Clear-On Jump after power cycle 21/02/19 DEPFET Lab Meeting 14/18

Analysis of Irradiation Data Source scans  MPV evolution 21/02/19 DEPFET Lab Meeting 15/18

Analysis of Irradiation Data Source scans  MPV evolution 21/02/19 DEPFET Lab Meeting 16/18

Analysis of Irradiation Data Source scans 21/02/19 DEPFET Lab Meeting 17/18

Analysis of Irradiation Data Pedestal Noise ADU 21/02/19 DEPFET Lab Meeting 18/18