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

Belle II SVD beam test SPS 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 (CO 2 ) Fast readout Layer 3 to 6: 4 layers of double-sided strip sensors Thomas Bergauer (HEPHY Vienna)2 Layer Radius Ladders mm mm mm 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 20153Thomas Bergauer (HEPHY Vienna) FW module BW module Possible separate modules: Origami flexes APV25 chips Airex spacer Silicon Sensors PCB Hybrid Pitch adapters Ribs

Belle II SVD beam test SPS June 2015 Belle II SVD Readout System Thomas Bergauer (HEPHY Vienna) APV25 chips Front-end hybrids Rad-hard DC/DC converters Analog level translation, data sparsification and hit time reconstruction ~2m cable 8 DOCK boxes ~10m cable 48 FADC+PROC Optical link (>20m) 48 FTB COPPER FTB COPPER FADC+PROC DOCK Inside of SVD Crates on top of Belle IIElectronics Hut DatCon system Belle II DAQ system Find RoI 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 CO 2 cooling system Thomas Bergauer (HEPHY Vienna)11 June 2015 Vienna open CO 2 system 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 20156

Belle II SVD beam test SPS 2015 Hit maps Mimosa AIDA telescope 7Thomas Bergauer (HEPHY Vienna)11 June upstream downstream

Belle II SVD beam test SPS 2015 Correlations Mimosa planes 8Thomas Bergauer (HEPHY Vienna)11 June /1 x0/1 y 0/2 x 0/2 y0/3 x 0/3 y 0/4 x 0/4 y0/5 x 0/5 y Downstream planes misaligned by 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) corrected mechanically, 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 µm 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 mm 122mm 0mm 57mm