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Table of Contents
- 1. Bonn T
est-Station
- 2. Tracking-Station
- 3. New Mezzanine ADC
- 4. Sensor T
Status of the Test-Station for Silicon-Strip-Detectors in Bonn Max - - PowerPoint PPT Presentation
Status of the Test-Station for Silicon-Strip-Detectors in Bonn Max - - PowerPoint PPT Presentation
Status of the Test-Station for Silicon-Strip-Detectors in Bonn Max Becker HISKP, University of Bonn PANDA Collaboration Meeting, T urin, 16. June 2009 1 Table of Contents 1. Bonn T est-Station 2. Tracking-Station 3. New Mezzanine ADC 4.
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Bonn Test-Station
Lab Setup in Bonn
- Si-strip sensor box with Supply Board
- VME-Crate with FPGA Board
- New Mezzanine 65MSPS ADC
- PC
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Bonn Test-Station
Sensor-L-Boards
- L-shape for double sided mounting
- Sensor Pitch Adaptor
Front-Ends (APV25)
- Sensor: Size 2x2 cm², Pitch 50µm,
385 strips (n-side), 385 strips (p-side)
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Bonn Test-Station
Data T aking
- Analog data from APVs sampled by the ADC
- ADC data stored in FIFO
- FIFO readout from VME-CPU
- Process sends data via Ethernet to PC
ADC Mezzanine FPGA Board VME CPU PC 3 APVs Supply Board FIFO
111110000011010011010010101010101010101 001010101010010110101010101010100101010 111010001010101010001010010001010100101
Ethernet
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Bonn Test-Station
Data Analysis
- Supply Board voltages
- Front-End parameters
- Noise, pedestals, hit pattern
- Pulseheight-Spectrum
- Continuous updates from Bonn, Dresden
& Mainz using common code repository
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Tracking-Station
- Four sensor boxes for tracking
- x-y-z movement
- Measurement of multiple scattering for various materials
- Possible operation @ ELSA, COSY, GSI ...
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New Mezzanine ADC
- ADC output written to FIFOs in FPGA
- FPGA readout via VME
- Transfer from VME crate to PC via Ethernet
- Next: FPGA based pedestal subtraction, hitfinder, noise...
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Sensor Test @ ELSA with photons
Setup behind Crystal Barrel
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Sensor Test @ ELSA with photons
Goals:
- First test with photons (up to 2.35GeV) from an accelerator
- Observation of the leakage current in the sensor
(temperature - & photon flux dependency)
- Monitoring data outside the lab
(Energy-loss, noise & channel positions with photons)
Results:
- Sensor survived & operated well
- Leakage current behaves as expected
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Sensor Test @ ELSA with photons
Hits on the sensor: simulation vs. measurement Measured energy loss:
Broken APV
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Sensor Test @ ELSA with photons
Leakage current and ... ...photon count ...temperature
6 . 5 . 9 : 8 . 5 . 9 : 1 . 5 . 9 : 1 2 . 5 . 9 : 1 4 . 5 . 9 : 1 6 . 5 . 9 : 0,000100 0,000150 0,000200 0,000250 0,000300 0,000350 0,00E+00 1,00E+11 2,00E+11 3,00E+11 4,00E+11 5,00E+11 6,00E+11 7,00E+11 8,00E+11 9,00E+11 6 . 5 . 9 : 8 . 5 . 9 : 1 . 5 . 9 : 1 2 . 5 . 9 : 1 4 . 5 . 9 : 1 6 . 5 . 9 : 0,000100 0,000150 0,000200 0,000250 0,000300 0,000350 21 22 23 24 25 26 27 28
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Sensor Test @ ELSA with photons
6 . 5 . 9 : 8 . 5 . 9 : 1 . 5 . 9 : 1 2 . 5 . 9 : 1 4 . 5 . 9 : 1 6 . 5 . 9 : 0,00E+00 2,00E-08 4,00E-08 6,00E-08 8,00E-08 1,00E-07 1,20E-07 1,40E-07 1,60E-07 1,80E-07 0,000100 0,000150 0,000200 0,000250 0,000300 0,000350 0,000400
Measured and Normalized leakage current predicted temperature and photon count dependend part of leakage current
6 . 5 . 9 : 8 . 5 . 9 : 1 . 5 . 9 : 1 2 . 5 . 9 : 1 4 . 5 . 9 : 1 6 . 5 . 9 : 0,00E+00 1,00E+11 2,00E+11 3,00E+11 4,00E+11 5,00E+11 6,00E+11 7,00E+11 8,00E+11 9,00E+11 500 1000 1500 2000 2500
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Summary / What's next?
Summary:
- Modular test setup for Si-strip sensors
- Full DAQ / preprocessing / reconstruction chain works
What's next?
- Implement double sided sensor boards in our test setup
- Construct a Tracking-Station & modify the DAQ for tracking