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

▶

Mar 22, 2023 289 likes •475 views

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-Universitt Gttingen 21/02/19 DEPFET Lab Meeting 1/18 Analysis of Irradiation Data Threshold

SLIDE 1

21/02/19 DEPFET Lab Meeting 1/18

Irradiation

Harrison Schreeck, Botho Paschen, Philipp Wieduwilt

2nd Institute Of Physics, Georg-August-Universität Göttingen

W

k i n p r

r e s s

SLIDE 2

21/02/19 DEPFET Lab Meeting 2/18

Analysis of Irradiation Data

Threshold voltage



SLIDE 3

21/02/19 DEPFET Lab Meeting 3/18

Analysis of Irradiation Data

Threshold voltage



SLIDE 4

21/02/19 DEPFET Lab Meeting 4/18

Analysis of Irradiation Data

Threshold voltage

SLIDE 5

21/02/19 DEPFET Lab Meeting 5/18

Analysis of Irradiation Data

Threshold voltage

SLIDE 6

21/02/19 DEPFET Lab Meeting 6/18

Analysis of Irradiation Data

Threshold voltage

SLIDE 7

21/02/19 DEPFET Lab Meeting 7/18

Analysis of Irradiation Data

Voltage/Current evolution

 Step from 50 krad to 100 krad

SLIDE 8

21/02/19 DEPFET Lab Meeting 8/18

Analysis of Irradiation Data

Voltage/Current evolution

 Step from 200 krad to 500 krad

SLIDE 9

21/02/19 DEPFET Lab Meeting 9/18

Analysis of Irradiation Data

Voltage/Current evolution

 Step from 18400 krad to 21600 krad

SLIDE 10

21/02/19 DEPFET Lab Meeting 10/18

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

SLIDE 11

21/02/19 DEPFET Lab Meeting 11/18

Analysis of Irradiation Data

Incident on 27.01.19



SLIDE 12

21/02/19 DEPFET Lab Meeting 12/18

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)

SLIDE 13

21/02/19 DEPFET Lab Meeting 13/18

Analysis of Irradiation Data

Source scans

 MPV evolution

CCG at 0V MPV is decreasing (Gate-On adjusted!) Clear-Off Slowly increasing

SLIDE 14

21/02/19 DEPFET Lab Meeting 14/18

Analysis of Irradiation Data

Source scans

 MPV evolution

MPV is increasing (Gate-On and ccg adjusted!) Clear-On Jump after power cycle

SLIDE 15

21/02/19 DEPFET Lab Meeting 15/18

Analysis of Irradiation Data

Source scans

 MPV evolution

SLIDE 16

21/02/19 DEPFET Lab Meeting 16/18

Analysis of Irradiation Data

Source scans

 MPV evolution

SLIDE 17

21/02/19 DEPFET Lab Meeting 17/18

Analysis of Irradiation Data

Source scans

SLIDE 18

21/02/19 DEPFET Lab Meeting 18/18

Analysis of Irradiation Data

Pedestal Noise

ADU