Belle II SVD beam Test SPS 2015 Thomas

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

Belle II SVD beam test SPS 2015 Belle II Silicon Vertex Detector Four layers with 6” doublesided strip detectors at larger radii and forward part • • • Large, individually read out sensors (12 x 6(4) cm) APV 25 based FE readout electronics inside acceptance region Maintain low material budget Layer 3 to 6: 4 layers of double-sided strip sensors Layer 1 -2: Two layers of DEPFET pixels • Lightweight mechanics • Thin cooling pipes (CO 2) • Fast readout 11 June 2015 Thomas Bergauer (HEPHY Vienna) Layer Radius Ladders 6 135 mm 16 5 104 mm 12 4 80 mm 10 3 38 mm 7 2

Belle II SVD beam test SPS 2015 Ladder of Layer 6 Origami flexes APV 25 chips PCB Hybrid Possible separate modules: FW module BW module Airex spacer Silicon Sensors Ribs Pitch adapters PCB Hybrid • 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 Thomas Bergauer (HEPHY Vienna) 3

Belle II SVD beam test SPS 2015 Belle II SVD Readout System Crates on top of Belle II Inside of SVD Electronics Hut Belle II DAQ system ~2 m 8 DOCK boxes 1748 APV 25 chips cable Front-end hybrids Rad-hard DC/DC converters DOCK COPPER Optical link (>20 m) 48 FADC+PROC ~10 m cable 48 FTB Dat. Con system Analog level translation, data sparsification and hit time reconstruction FADC+PROC FTB AMC board Find Ro. I PXD COPPER AMC board 11 June 2015 Thomas Bergauer (HEPHY Vienna) 4

Belle II SVD beam test SPS 2015 Beam test setups: H 6 A Vienna open CO 2 system 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 11 June 2015 H 6 A DUT box with xy stage and “pseudo-telescope” Thomas Bergauer (HEPHY Vienna) 5

Belle II SVD beam test SPS 2015 Beam test setups: H 6 B • • AIDA Telescope Two FE-I 4 planes with USBPix readout Two DUT planes of Belle II SVD sensors Test resolution 11 June 2015 Thomas Bergauer (HEPHY Vienna) 6

Belle II SVD beam test SPS 2015 Hit maps Mimosa AIDA telescope 4 11 June 2015 3 5 Thomas Bergauer (HEPHY Vienna) upstream 2 1 downstream 0 7

Belle II SVD beam test SPS 2015 Correlations Mimosa planes 0/1 x 0/1 y 0/2 x 5 1 0/2 y 0/3 x 3 0/3 y 0 0/4 x 0/4 y 2 4 0/5 x 0/5 y Downstream planes misaligned by 100 px in both x and y coordinate (1. 8 mm) 11 June 2015 Thomas Bergauer (HEPHY Vienna) 8

Belle II SVD beam test SPS 2015 FE-I 4 plane • Three sensors brought to CERN from MPI Munich by Anna Macchiolo – – One not working One FE-I 4 a installed One FE-I 4 b installed Due to different version (a/b) they cannot read out together • Readout with USBPix readout system – Fully integrated by EUDAQ producer 11 June 2015 Adapter card looks different since our version can read out Up to four single chip cards Thomas Bergauer (HEPHY Vienna) 9

Belle II SVD beam test SPS 2015 Hitmaps FEI 4 Upstream (initial position) downstream Misalignment (hopefully) corrected mechanically, but not tested yet 11 June 2015 Thomas Bergauer (HEPHY Vienna) 10

Belle II SVD beam test SPS 2015 FE-I 4 Residuals • FE-I 4 pixel size is 250 x 50 µm Resolutions: • calculated: 72. 2 x 14. 4 µm • Measured: 75. 6 x 16. 8 µm 11 June 2015 Thomas Bergauer (HEPHY Vienna) 11

Belle II SVD beam test SPS 2015 DUT residuals Trapezoidal sensor: • Pitch on p-side between 50 and 75 um with one intermediate strip (capacitively coupled) • Strip length on n-side between 57 and 38 mm 39µm 11 June 2015 Thomas Bergauer (HEPHY Vienna) 13µm 12

Belle II SVD beam test SPS 2015 Beam Profile • According to Nikos/Edda horizontal beam profile is not perfectly Gaussian due to low intensity 11 June 2015 0 mm 122 mm 0 mm 57 mm Thomas Bergauer (HEPHY Vienna) 13