Hybrid 5 tests: Lab characterizatjon and Irradiatjons 20 th - - PowerPoint PPT Presentation

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Hybrid 5 tests: Lab characterizatjon and Irradiatjons 20 th - - PowerPoint PPT Presentation

Dec 08, 2022 328 likes •859 views

Hybrid 5 tests: Lab characterizatjon and Irradiatjons 20 th internatjonal workshop on DEPFET detectors and applicatjons 11 th 14 th May 2016, Seeon J. Dingfelder, L. Germic, T. Hemperek, C. Hnig, H Krger, F. Lttjcke, C. Marinas, B.

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SLIDE 1

1

Hybrid 5 tests: Lab characterizatjon and Irradiatjons

  • J. Dingfelder, L. Germic, T. Hemperek,
  • C. Hönig, H Krüger, F. Lüttjcke, C. Marinas,
  • B. Paschen, N. Wermes

University of Bonn

paschen@physik.uni-bonn.de

20th internatjonal workshop on DEPFET detectors and applicatjons 11th – 14th May 2016, Seeon

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SLIDE 2

PXD 9 Productjon (Pilot Run)

paschen@physik.uni-bonn.de 2

Full module with large matrix

(768 x 250 pixels / 191 gates, 1000 drainlines)

Small matrices

(80 x 32 pixels / 20 gates, 128 drainlines)

Pilot module: 4 + 4 + 6 ASICs and large matrix PXD 9 wafer with modules and test structures

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SLIDE 3

The Hyrid 5 Test System

paschen@physik.uni-bonn.de 3

DHP

(Data reduction)

DCD

(Drain current digitization)

Small matrix

(64 x 32 pixels / 16 gates, 128 drainlines)

Switcher

(Matrix steering)

  • PCB with minial number of ASICs for a full test system
  • Many test points and configuration possibilities
  • Well suited for testing of new components
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SLIDE 4

Laboratory measurements with radioactjve sources

paschen@physik.uni-bonn.de 4

Source: 90Sr Hybrid 5 PCB Backside illumination of the matrix

Setup:

Scintillator for triggering PXD9 e-

  • Electrons from Strontium act as MIPs
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SLIDE 5

Strontjum Measurement

paschen@physik.uni-bonn.de 5 HV: -70 V, Drift: -5 V Clear-On: 20 V, Clear-Off: 5 V Gate-On: -2.5 V, Gate-Off: 3 V Source: 7 V, CCG: -1 V, Bulk: 10 V, Guard: 5 V

Hit rate Mean drain current

Current [ADU]

Signal histogram Example measurement at good working point

  • Source spot clearly visible
  • Drain currents relatively homogeneous

Triggers: 1789967 Triggers: 1789967

Column Column Row Row Hits/# Triggers * 1e4 Mean Drain Current [ADU]

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SLIDE 6

Strontjum Measurement: Drifu vs. High Voltage

paschen@physik.uni-bonn.de 6

HV [V]: -80 -78 -76 -74 -72 -70 -68 -66 -64 -62 -60 Drift [V]:

  • 7
  • 5
  • 3

Hit Rate [1e4 x Hits/# Triggers]

Clear-On: 20 V, Clear-Off: 3 V Gate-On: -2.5 V, Gate-Off: 3 V Source: 7 V, CCG: -1 V, Bulk: 10 V Guard: 5 V

~ 1.8 M Triggers per measurement point Column Column Column Column Column Column Column Column Column Column Column Row Row Row

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SLIDE 7

Strontjum Measurement

paschen@physik.uni-bonn.de 7

Clear-On: 20 V, Gate-On: -2.5 V, Gate-Off: 3 V Source: 7 V, Bulk: 10 V, Guard: 5 V HV: -70 V, Drift: -5 V

CCG [V]:

  • 2.0
  • 1.5
  • 1.0
  • 0.5

0.0 Hit Rate [1e4 Hits/# Triggers] Mean Signal in ADU

~ 1.8 M Triggers per measurement point

Column Column Column Column

Row Row Row Row Row Row Row Row Row Row

Clear-Off [V]: 5 4 3 2 1 5 4 3 2 1

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SLIDE 8

Rings in the matrix

paschen@physik.uni-bonn.de 8

Rings of different hit efficiency are visible for certain working points

  • Seem t o be concentric with the wafer
  • Current explanation: Doping variation inside the wafer introduced during crystal growth

“Hit efficiency measurement” with 4 GeV electrons at DESY:

W35_OB1 at DESY

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SLIDE 9

Even/Odd Efgect

paschen@physik.uni-bonn.de 9

Hit rate Row projection of hit rate Signal histogram

HV: -70 V, Drift: -7 V Clear-On: 20 V, Clear-Off: 3 V Gate-On: -2.5 V, Gate-Off: 3 V Source: 7 V, CCG: -1 V, Bulk: 10 V, Guard: 5 V

For certain working points even and odd rows show differences in hit rates and drain currents

  • Not understood yet
  • Drain current histogram does not look homogeneous anymore

Hits/# Triggers * 1e4 Row Row Column Entries

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SLIDE 10

Even/odd efgect

paschen@physik.uni-bonn.de 10

Hitratio even/odd rows

  • Behavior changes

quickly within steps of 2 V of high voltage

  • Magnitude of change

depends on drift voltage

Signal even/odd rows Signal even/odd rows

High Voltage [V]

Hitratio even/odd rows

Drain current [ADU] Drain current [ADU]

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SLIDE 11

Laser measurements

paschen@physik.uni-bonn.de 11

Laser diode Optjcal fjber Microskope DUT Motor stage Lense optjcs

P

Light source

  • Red laser with DUT on motor stage
  • 3 μm laser spot
  • Spacially resolved measurement
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SLIDE 12

First measurements

paschen@physik.uni-bonn.de 12

Columns Rows (vertical) Matrix readout time: 2.05 μs Laser:

  • from backside
  • ~20 injections per

frame

  • 800 frames per

point of measurement (almost) full matrix One bin per pixel 50x55 μm2 steps HV = -70 V Drift = -5 V

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SLIDE 13

paschen@physik.uni-bonn.de 13

50x55 μm2 steps HV = -70 V Drift = -5 V

First measurements

Columns Rows (vertical) Matrix readout time: 2.05 μs Laser:

  • from backside
  • ~20 injections per

frame

  • 800 frames per

point of measurement (almost) full matrix One bin per pixel

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SLIDE 14

paschen@physik.uni-bonn.de 14

HV = -70 V Drift = -5 V

First measurements

Columns Rows (vertical) Matrix readout time: 2.05 μs Laser:

  • from backside
  • ~20 injections per

frame

  • 800 frames per

point of measurement (almost) full matrix One bin per pixel 4x4 μm2 steps

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SLIDE 15

Rings

paschen@physik.uni-bonn.de 15

Columns HV = -80 V Drift = -5 V Full matrix 50x55 μm2 steps Rows (vertical shutter direction)

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SLIDE 16

paschen@physik.uni-bonn.de 16

HV = -80 V Drift = -5 V

Rings

Columns Full matrix 50x55 μm2 steps Rows (vertical shutter direction)

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SLIDE 17

paschen@physik.uni-bonn.de 17

HV = -80 V Drift = -5 V 10x10 μm2 steps Rows (vertical shutter direction)

Rings

Columns

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SLIDE 18

paschen@physik.uni-bonn.de 18

HV = -80 V Drift = -5 V 10x10 μm2 steps

Rings

Columns Rows (vertical shutter direction)

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SLIDE 19

Rings

paschen@physik.uni-bonn.de 19

Columns Rows (rolling shutter direction) HV = -80 V Drift = -5 V ROIs 5x5 μm2 steps Even/Odd effect visible inefficiencies!

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SLIDE 20

germic@physik.uni-bonn.de, hoenig@physik.uni-bonn.de, paschen@physik.uni-bonn.de 20

Irradiatjon of DHPT1.1 and DCDB4pp at KIT

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SLIDE 21

Hybrid 5 laboratory tests

paschen@physik.uni-bonn.de 21

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SLIDE 22

Hybrid 5 laboratory tests

paschen@physik.uni-bonn.de 22

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SLIDE 23

Hybrid 5 laboratory tests

paschen@physik.uni-bonn.de 23

Overview

Transfer back to Bonn

dhp-io dhp-core dcd-dvdd dcd-avdd

Currents

4 MRad 3 MRad 2 MRad 1 MRad

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SLIDE 24

germic@physik.uni-bonn.de, hoenig@physik.uni-bonn.de, paschen@physik.uni-bonn.de 24

DHPT1.1 Highspeed Link

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SLIDE 25

DHPT1.1 Highspeed Link

germic@physik.uni-bonn.de 25

DHE 1 m Probe BB 1 m DHPT 1.1 5 m

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SLIDE 26

DHPT1.1 Highspeed Link

paschen@physik.uni-bonn.de 26

0 MRad 4 MRad

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SLIDE 27

DHPT1.1 Highspeed Link

germic@physik.uni-bonn.de 27

Position of zero crossing (Edge jitter) Vertical eye

  • penning

Jitter Cyc2cyc

Extractions of eye diagram measurement Voltage [mV] Time [ps] TID [kRad]

trendlines shown NO fits Eye openning stays constant

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SLIDE 28

germic@physik.uni-bonn.de, hoenig@physik.uni-bonn.de, paschen@physik.uni-bonn.de 28

DCD ↔ DHP communicatjon

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SLIDE 29

Overview 0 MRad

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SLIDE 30

Overview 1 MRad

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SLIDE 31

Overview 2 MRad

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SLIDE 32

Overview 3 MRad

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SLIDE 33

Overview 4 MRad

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SLIDE 34

Overview 4 MRad in Bonn

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SLIDE 35

germic@physik.uni-bonn.de, hoenig@physik.uni-bonn.de, paschen@physik.uni-bonn.de 35

DCD optjmizatjon

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SLIDE 36

DCD optjmizatjon

hoenig@physik.uni-bonn.de 36

Optimize DCD for:

  • range of curve
  • linearity
  • missing codes/bit errors
  • noise

DCD is the part of the electronics directly connected to the matrix. It is responsible for digitizing the signal current generated in the matrix.

Half speed Low gain

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SLIDE 37

DCD and its parameters

hoenig@physik.uni-bonn.de 37

5 most important parameters for

  • pimization:
  • RefIn, - AmpLow, - VPSource,
  • VPSource2, - VFBPBias

single DCD channel single DCD channel

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SLIDE 38

DCD optjmal working point

hoenig@physik.uni-bonn.de 38

Unirradiated Optjmal: AmpLow = 300 mV RefIn = 900 mV 1000 kRad Optjmal: AmpLow = 250 mV RefIn = 900 mV 2000 kRad Optjmal: AmpLow = 600 mV RefIn = 1000 mV (determined by program)

AmpLow – RefIn scan

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SLIDE 39

DCD optjmal working point

hoenig@physik.uni-bonn.de 39

3000 kRad Optjmal: AmpLow = 250 mV RefIn = 900 mV 4000 kRad Optjmal: AmpLow = 200 mV RefIn = 900 mV Afuer irradiatjon back in Bonn Optjmal: AmpLow = 250 mV RefIn = 900 mV (determined by program)

AmpLow – RefIn scan

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SLIDE 40

DCD optjmal working point

hoenig@physik.uni-bonn.de 40

Unirradiated Optjmal: Ipsource = 110 mV Ipsource 2 = 110 mV 1000 kRad Optjmal: Ipsource = 100 mV Ipsource 2 = 95 mV 2000 kRad Optjmal: Ipsource = 100 mV Ipsource 2 = 95 mV

Ipsources scan

Scans done with difgerent number of channels some use 12 channels some use 87.

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SLIDE 41

DCD optjmal working point

hoenig@physik.uni-bonn.de 41

3000 kRad Optjmal: Ipsource = 95 mV Ipsource 2 = 90 mV 4000 kRad Optjmal: Ipsource = 110 mV Ipsource 2 = 100 mV Afuer irradiatjon Optjmal: Ipsource = 105 mV Ipsource 2 = 95 mV

Ipsources scan

Scans done with difgerent number of channels some use 12 channels some use 87.

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SLIDE 42

DCD channel map

hoenig@physik.uni-bonn.de 42

250 kRad 1250 kRad Noise Missing code Range

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SLIDE 43

DCD channel map

hoenig@physik.uni-bonn.de 43

2250 kRad 3000 kRad Noise Missing code Range

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SLIDE 44

DCD channel map

hoenig@physik.uni-bonn.de 44

4000 kRad Back in Bonn Noise Missing code Range

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SLIDE 45

DCD channel map

hoenig@physik.uni-bonn.de 45

4000 kRad 250 kRad

Data transmission of double column stops working Data transmission of double column stops working

4000 kRad 250 kRad

Data transmission of double column stops working Data transmission of double column stops working

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SLIDE 46

Bonn - 23.03.2016 46 hoenig@physik.uni-bonn.de

Contjnuous measurement

restart restart

new delays new delays end of irradiatjon end of irradiatjon

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SLIDE 47

Contjnous measurement during 1 MRad step

paschen@physik.uni-bonn.de 47

system power cycle system power cycle

new delays new delays Noise [ADU] Time [minute]

1 Mrad

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SLIDE 48

Contjnous measurement during 1 MRad step

paschen@physik.uni-bonn.de 48

system power cycle system power cycle

new delays new delays Gain [ADC/DAC] Time [minute]

1 Mrad

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SLIDE 49

Summary

paschen@physik.uni-bonn.de 49

  • First characterization of small PXD9 matrix with Strontium source and laser light

at laboratory

  • Ring effect likely due to doping vatiations
  • Odd/even effect not understood

→ more detailed measurements necessary

  • Good working point could be found

→ lab tests with full matrix necessary

  • Irradiation of DHPT1.1 and DCDB4pp with X-ray source
  • High speed links stable against radiation up to 4 Mrad
  • Optimal working point of DCD stable
  • Degradation of DCD <-> DHP data transmission (maybe bad asicpair)
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SLIDE 50

Next steps

paschen@physik.uni-bonn.de 50

Hybrid 5 remains major test vehicle for new components

  • Received 6 fresh Hybrid 5 boards in Seeon
  • Populated with SMD components at HLL
  • Received 7 wirebond adapters with DCD4.1/2 + DHPT1.1 from HLL
  • Assembly onto 7 Hybrid 5 boards in bonn
  • Distributed characterization in Goettingen and Bonn
  • → urgently need new DHE software for new DCD JTAG handling
  • As soon as hybrids work and bonded Switchers are available:
  • Add Switchers and small PXD9 matrices to some hybrids for more characterization
  • Irradiation campaign? Parasitic test at future PXD exclusive beam test?
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SLIDE 51

51

Thank you

paschen@physik.uni-bonn.de