11 june 2015 thomas bergauer (hephy vienna) belle ii svd beam test sps 2015 sps users meeting
TRANSCRIPT
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
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
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
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”
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
Belle II SVD beam test SPS 2015
Hit maps Mimosa AIDA telescope
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0 1
2 3
4 5
upst
ream
dow
nstr
eam
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)
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
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
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
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
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