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11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

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11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting
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Page 1: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

11 June 2015

Thomas Bergauer (HEPHY Vienna)

Belle II SVD beam Test SPS 2015

SPS users meeting

Page 2: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

11 June 2015

Belle II Silicon Vertex Detector

Four layers with 6” double-sided strip detectors at larger radii and forward part

•Large, individually read out sensors (12 x 6(4) cm)•APV25 based FE readout electronics inside acceptance region•Maintain low material budget

• Lightweight mechanics

• Thin cooling pipes (CO2)

•Fast readout

Layer 3 to 6: 4 layers of double-sided strip sensors

Thomas Bergauer (HEPHY Vienna) 2

Layer Radius Ladders

6 135 mm 16

5 104 mm 12

4 80 mm 10

3 38 mm 7

Layer 1-2: Two layers of DEPFET pixels

Page 3: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Ladder of Layer 6

• Basic element “atomic unit” is one ladder• Only FW and BW module can be assembled independently • No single Origami module with one sensor possible

11 June 2015 3Thomas Bergauer (HEPHY Vienna)

FW module BW module

Possible separate modules:

Origami flexes APV25 chips

Airex spacerSilicon Sensors

PCB Hybrid

PCB Hybrid

Pitch adaptersRibs

Page 4: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

11 June 2015

Belle II SVD Readout System

Thomas Bergauer (HEPHY Vienna) 4

1748 APV25 chips

Front-end hybrids Rad-hardDC/DC

convertersAnalog level translation,data sparsification andhit time reconstruction

~2mcable

8 DOCK boxes ~10m

cable

48 FADC+PROC

O ptical link (>20m)

48 FTB CO

PP

ER

FTB COPPERFADC+PROCDOCK

Inside of SVDCrates on top of Belle II Electronics Hut

DatCon system

Belle II DAQ system

Find RoIAMC board

AMC board

PXD

Page 5: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Beam test setups: H6A

Full Belle II Setup•One full ladder (layer 5)•„Pseudo-telescope“ with single modules in front/back•Prototype of full DAQ system

•CO2 cooling system

Thomas Bergauer (HEPHY Vienna)11 June 2015

Vie

nna

ope

n C

O2 s

yste

m

5

H6A DUT box with xy stage and “pseudo-telescope”

Page 6: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Beam test setups: H6B

• AIDA Telescope• Two FE-I4 planes with USBPix

readout• Two DUT planes of Belle II SVD

sensors• Test resolution

Thomas Bergauer (HEPHY Vienna)11 June 2015 6

Page 7: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Hit maps Mimosa AIDA telescope

7Thomas Bergauer (HEPHY Vienna)11 June 2015

0 1

2 3

4 5

upst

ream

dow

nstr

eam

Page 8: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Correlations Mimosa planes

8Thomas Bergauer (HEPHY Vienna)11 June 2015

0/1 x 0/1 y 0/2 x

0/2 y 0/3 x 0/3 y

0/4 x 0/4 y 0/5 x

0/5 y

0

1

2

3

4

5

Downstream planes misalignedby 100px in both x and y coordinate(1.8mm)

Page 9: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

FE-I4 plane

• Three sensors brought to CERN from MPI Munich by Anna Macchiolo– One not working– One FE-I4a installed– One FE-I4b installed– Due to different version (a/b)

they cannot read out together

• Readout with USBPix readout system– Fully integrated by EUDAQ

producer

Thomas Bergauer (HEPHY Vienna)11 June 2015

Adapter card looks different since our version can read out Up to four single chip cards

9

Page 10: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Hitmaps FEI4

Upstream (initial position) downstream

10Thomas Bergauer (HEPHY Vienna)11 June 2015

Misalignment (hopefully) correctedmechanically, but not tested yet

Page 11: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

FE-I4 Residuals

• FE-I4 pixel size is 250x50 µm

Resolutions:

• calculated: 72.2 x 14.4 µm

• Measured: 75.6 x 16.8 µm

11Thomas Bergauer (HEPHY Vienna)11 June 2015

Page 12: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

DUT residuals

Trapezoidal sensor:•Pitch on p-side between 50 and 75um with one intermediate strip (capacitively coupled)•Strip length on n-side between 57 and 38mm

12Thomas Bergauer (HEPHY Vienna)11 June 2015

39µm 13µm

Page 13: 11 June 2015 Thomas Bergauer (HEPHY Vienna) Belle II SVD beam Test SPS 2015 SPS users meeting.

Belle II SVD beam test SPS 2015

Beam Profile

• According to Nikos/Edda horizontal beam profile is not perfectly Gaussian due to low intensity

13Thomas Bergauer (HEPHY Vienna)11 June 2015

0mm 122mm

0mm 57mm


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