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

Luminosity Detector

Straw Tube Stations

Physics Program

➤ hadron spectroscopy ➤ nucleon structure ➤ hyper nuclei ➤ hadrons in matter Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector

PANDA Experiment

Luminosity Detector

Straw Tube Stations

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

Luminosity Detector

Straw Tube Stations

Measurements at PANDA

➤ p¯

p-formation experiments

➤ production experiments Introduction 25.02.2014 1 / 19

HV-MAPS for the PANDA Luminosity Detector

PANDA Experiment

Luminosity Detector

Straw Tube Stations

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

Beam Scattered Anti-Proton Aluminum carrier CV-Diamond HV-MAPS

➤ 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 ➤ bias voltage (≈60V)

14 µm depletion layer fast charge collection

➤ radiation tolerant ➤ leading edge

discriminator

➤ thinable to less than

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

Beam Mimosa MuPix 1 2 3 4 5 6 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

Column

5 10 15 20 25 30

Row

5 10 15 20 25 30 35 Hits 1 10

2

10

3

10

4

10

Digital Part 92 µm 8 µ m

➤ 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

1 2 3 4 5 6 −8 −6 −4 −2 2 4 6 8 mean X [µm]

5 GeV 3 GeV

1 2 3 4 5 6 Mimosa Plane −8 −6 −4 −2 2 4 6 8 mean Y [µm]

5 GeV 3 GeV

Alignment in X/Y Direction Alignment in X/Y Direction 1 2 3 4 5 6 1 2 3 4 5 6 7 8 σX [µm]

5 GeV 3 GeV

1 2 3 4 5 6 Mimosa Plane 1 2 3 4 5 6 7 8 σY [µm]

5 GeV 3 GeV

Track Residuals in X/Y Direction Track Residuals in X/Y Direction

➤ 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 |di| < 0.95 · pitchi

Entries

Test Beam Results 25.02.2014 10 / 19

HV-MAPS for the PANDA Luminosity Detector

Global Efficiency

Column

5 10 15 20 25 30

Row

5 10 15 20 25 30 35 Efficiency 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 ➤ efficiency up to 99% Test Beam Results 25.02.2014 11 / 19

HV-MAPS for the PANDA Luminosity Detector

Projected Efficiency

Row

5 10 15 20 25 30 35

Efficiency

0.5 0.6 0.7 0.8 0.9 1

Column

5 10 15 20 25 30

Efficiency

0.5 0.6 0.7 0.8 0.9 1

➤ 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

Column

• 0.5

0.5 1 1.5 2 2.5 3 3.5

Row

• 0.5

0.5 1 1.5 2 2.5 3 3.5 Efficiency 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1

➤ 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

Column

5 10 15 20 25 30

Row

5 10 15 20 25 30 35 Efficiency 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 ➤ 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

5 10 15 20 25 30

column / 1

5 10 15 20 25 30 35

row / 1

0.98 0.99 1.00

efficiency / 1

0.980.991.00

efficiency / 1

0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00

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

Data SODA Detector Front-ends Data Concentrator First Stage Event Builder Second Stage Event Builder Compute Node

➤ 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

HV-MAPS

detector (vacuum) @ detector E20 DAQ floor

HV-MAPS HV-MAPS HV-MAPS HV-MAPS HV-MAPS HV-MAPS HV-MAPS

... ... ... ... ... ... ... ...

Front-end Board Front-End Board Front-End Board Front-End Board

25 sensors / halfplane x 4 = 200 sensors / detector half = 400 sensors with 2 LVDS links each = 800 (2 wire) LVDS links in total 50 LVDS links / FPGA board x 16 1 optical links / FPGA board x 16 = 16 optical links PANDA data concentrator PANDA data concentrator PANDA data concentrator

“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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