HV-MAPS (High Voltage Monolithic Active Pixel Sensors) for the - PowerPoint PPT Presentation

HV-MAPS (High Voltage Monolithic Active Pixel Sensors) for the PANDA Luminosity Detector Tobias Weber for the PANDA collaboration in collaboration with the Heidelberg Mu3e group INSTR14 25.02.2014

HV-MAPS for the PANDA Luminosity Detector PANDA Experiment Straw Tube Stations Luminosity Detector Physics Program ➤ hadron spectroscopy ➤ hyper nuclei ➤ nucleon structure ➤ hadrons in matter Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector PANDA Experiment Straw Tube Stations Luminosity Detector Measurements at PANDA ➤ p ¯ p -formation experiments resonance scans threshold scans Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector PANDA Experiment Straw Tube Stations Luminosity Detector Measurements at PANDA ➤ p ¯ p -formation experiments ➤ production experiments Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector PANDA Experiment Straw Tube Stations Luminosity Detector Measurements at PANDA ➤ p ¯ p -formation experiments ➤ production experiments ⇒ luminosity measurement Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector Luminosity Detector Aluminum carrier Scattered Anti-Proton Beam HV-MAPS CV-Diamond ➤ reconstruction of angle of the elastically scattered antiprotons ➤ four silicon tracker stations ➤ 400 HV-MAPS in total Introduction 25.02.2014 2 / 19

HV-MAPS for the PANDA Luminosity Detector High Voltage Monolithic Active Pixel Sensors developed by Ivan Peri´ c for the Mu3e Experiment ➤ 180 nm technology ➤ leading edge ➤ bias voltage ( ≈ 60V) discriminator 14 µm depletion layer fast charge collection ➤ thinable to less than ➤ radiation tolerant 50 µm Introduction 25.02.2014 3 / 19

HV-MAPS for the PANDA Luminosity Detector High Voltage Monolithic Active Pixel Sensors developed by Ivan Peri´ c for the Mu3e Experiment ➤ size of 2x2 cm with 80x80 µm pixels ➤ digital part on one chip side, active area >90% ➤ readout frequency up to 40 MHz ➤ LVDS-Link @ 400-800 Mbps Introduction 25.02.2014 3 / 19

HV-MAPS for the PANDA Luminosity Detector High Voltage Monolithic Active Pixel Sensors MuPix 4 Prototype ➤ 40x32 pixels with 80 µm x 92 µm ➤ column logic on chip ➤ parallel data readout (no serial link) ➤ readout and slow control by FPGA-Board Introduction 25.02.2014 4 / 19

HV-MAPS for the PANDA Luminosity Detector DESY Test Beam Test Beam by Mu3e group with EUDET-telescope Mimosa Beam MuPix 4 5 6 1 2 3 x z y ➤ electron beam with 3-5 GeV ➤ measurement of sensor efficiency Test Beam Results 25.02.2014 5 / 19

HV-MAPS for the PANDA Luminosity Detector DESY Test Beam Test Beam Results 25.02.2014 6 / 19

HV-MAPS for the PANDA Luminosity Detector Eutel Telescope Software ➤ reconstruction tool set for test beam ➤ based on ILC software Test Beam Results 25.02.2014 7 / 19

HV-MAPS for the PANDA Luminosity Detector MuPix 4: A Hybrid Strixel Row Hits 35 4 10 30 25 3 10 20 2 10 15 92 µm 10 8 0 µ 10 m 0 Digital Part 5 0 1 0 5 10 15 20 25 30 Column ➤ timing problem in row address readout ⇒ projection of hits into first two rows ➤ high noise in few pixels Test Beam Results 25.02.2014 8 / 19

HV-MAPS for the PANDA Luminosity Detector Telescope Resolution and Alignment Alignment in X/Y Direction Alignment in X/Y Direction Track Residuals in X/Y Direction Track Residuals in X/Y Direction 8 8 5 GeV 5 GeV 6 7 4 3 GeV 6 3 GeV mean X [ µm ] 2 5 σ X [ µm ] 0 4 − 2 3 − 4 2 − 6 1 − 8 0 1 2 3 4 5 6 1 2 3 4 5 6 8 8 5 GeV 5 GeV 6 7 4 3 GeV 6 3 GeV mean Y [ µm ] 2 5 σ Y [ µm ] 0 4 − 2 3 − 4 2 − 6 1 − 8 0 1 2 3 4 5 6 1 2 3 4 5 6 Mimosa Plane Mimosa Plane ➤ good alignment in X direction ➤ offsets in Y direction on telescope planes next to MuPix ➤ track residuals below 6 µm Test Beam Results 25.02.2014 9 / 19

HV-MAPS for the PANDA Luminosity Detector Matching Tracks to Hits General Cuts ➤ removal of Hits/Tracks in broken rows ➤ ignore sensor edges Hit-Track Matching rectangular cut on hit-track distance | d i | < 0 . 95 · pitch i Entries Test Beam Results 25.02.2014 10 / 19

HV-MAPS for the PANDA Luminosity Detector Global Efficiency 1 Row Efficiency 0.95 35 0.9 30 0.85 25 0.8 20 0.75 0.7 15 0.65 10 0.6 5 0.55 0 0.5 0 5 10 15 20 25 30 Column ➤ efficiency up to 99% Test Beam Results 25.02.2014 11 / 19

HV-MAPS for the PANDA Luminosity Detector Projected Efficiency Efficiency Efficiency 1 1 0.9 0.9 0.8 0.8 0.7 0.7 0.6 0.6 0.5 0.5 0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 Row Column ➤ increase of efficiency with row number ➤ row dependence probably caused by faulty TDAC settings ➤ average column efficiency above 95% Test Beam Results 25.02.2014 12 / 19

HV-MAPS for the PANDA Luminosity Detector Sub-Pixel Efficiency 3.5 1 Row Efficiency 0.95 3 0.9 2.5 0.85 2 0.8 1.5 0.75 0.7 1 0.65 0.5 0.6 0 0.55 -0.5 0.5 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 Column ➤ structure with reduced efficiency at pixel borders ➤ caused by wrong potential of guard ring Test Beam Results 25.02.2014 13 / 19

HV-MAPS for the PANDA Luminosity Detector Efficiency with Column Information hit-track matching using only column information 1 Row Efficiency 0.95 35 0.9 30 0.85 25 0.8 20 0.75 0.7 15 0.65 10 0.6 5 0.55 0 0.5 0 5 10 15 20 25 30 Column ➤ high efficiency also in broken rows Test Beam Results 25.02.2014 14 / 19

HV-MAPS for the PANDA Luminosity Detector Efficiency without TDAC tunning efficiency / 1 1.00 0.99 0.98 1.00 0.95 35 0.90 30 0.85 efficiency / 1 25 0.80 row / 1 20 0.75 0.70 15 0.65 10 0.60 5 0.55 0 0.50 0 5 10 15 20 25 30 0.980.991.00 column / 1 efficiency / 1 ➤ homogeneous efficiency distribution ➤ efficiency around 99% Test Beam Results 25.02.2014 15 / 19

HV-MAPS for the PANDA Luminosity Detector PANDA DAQ Detector Front-ends Data Concentrator First Stage Event Builder Second Stage Event Builder Compute Node Data SODA ➤ generation of online trigger ➤ synchronisation of sub-detectors Data Acquisition 25.02.2014 16 / 19

HV-MAPS for the PANDA Luminosity Detector Luminosity Detector Frontend Board ➤ HADES Trigger and Readout Board (M. Traxler et al 2011 JINST 6 C12004) ➤ 5x Lattice ECP3-150 FPGAs ➤ main FPGA for UDP/inter FPGA connectivity ➤ four side FPGAs for sensor I/O Data Acquisition 25.02.2014 17 / 19

HV-MAPS for the PANDA Luminosity Detector Luminosity DAQ ... ... ... ... detector 25 sensors / halfplane x 4 = (vacuum) 200 sensors / detector half HV-MAPS HV-MAPS HV-MAPS HV-MAPS = 400 sensors with 2 LVDS links each HV-MAPS HV-MAPS HV-MAPS HV-MAPS ... ... ... ... = 800 (2 wire) LVDS links in total 50 LVDS links / FPGA board x 16 @ detector Front-end Front-End Front-End Front-End Board Board Board Board 1 optical links / FPGA board x 16 = 16 optical links PANDA PANDA data concentrator data concentrator PANDA data concentrator E20 DAQ floor “event” builder Data Acquisition 25.02.2014 18 / 19

HV-MAPS for the PANDA Luminosity Detector Summary ➤ test beam in October 2013 ➤ efficiencies look promising ➤ problem with row address readout in MuPix 4 Outlook ➤ next MuPix iteration in March correction of row readout additional amplifier-stage ⇒ improved signal-to-noise better discriminator Summary and Outlook 25.02.2014 19 / 19

Thank you for your attention!

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