Beamtime at COSY: Data analysis results Viktor Rodin Myroslav - - PowerPoint PPT Presentation

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Beamtime at COSY: Data analysis results Viktor Rodin Myroslav - - PowerPoint PPT Presentation

Oct 03, 2022 438 likes •839 views

kvi - center for advanced kvi - center for advanced radiation technology radiation technology | 1 | 1 Beamtime at COSY: Data analysis results Viktor Rodin Myroslav Kavatsyuk Peter Schakel | 2 SODANET protocol Data is read out as a

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SLIDE 1

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kvi - center for advanced radiation technology

1 |

kvi - center for advanced radiation technology

Beamtime at COSY: Data analysis results

Viktor Rodin Myroslav Kavatsyuk Peter Schakel

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SLIDE 2

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SODANET protocol

Data is read out as a one SuperBurst event (16 bursts) equal 38.6 μs.

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SLIDE 3

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Burst Building Network

1562500 SuperBursts per minute ≈ 26040 SuperBursts per second

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SLIDE 4

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SODANET protocol

Data is read out as a one SuperBurst event (16 bursts) equal 38.6 μs.

How can we check a stability of synchronization?

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SLIDE 5

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Final Setup at COSY (22.02.19)

~ 2 . 5 G e V p r

  • t
  • n

s

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SLIDE 6

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Final Setup at COSY (22.02.19)

~ 2 . 5 G e V p r

  • t
  • n

s

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SLIDE 7

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Final Setup at COSY (22.02.19)

~ 2 . 5 G e V p r

  • t
  • n

s

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SLIDE 8

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Measurement Strategy

To check the synchronization quality of SODANET and the readout stability of DAQ system in general, a strategy of growing complexity was proposed:

  • Only EMC Readout with 1 DC
  • Only EMC Readout with 2 DC
  • EMC+TOF Readout
  • EMC+TOF+FT Readout

EMC TOF S O D A N E T a n d D A Q FT

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SLIDE 9

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Only EMC with 1 DC

Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC SODA CN I CN III CN II

PC

  • EMC prototype – 9 crystals
  • Light Pulser as a reference
  • 1 DC
  • SODA source on the same TRB
  • 8/16 bursts for BBN
  • CN filtering
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SLIDE 10

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA source

CN I CN III CN II

PC

DC

Only EMC with 2 DC

  • EMC prototype – 9 crystals
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the same TRB
  • 8/16 bursts for BBN
  • CN filtering
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SLIDE 11

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA HUB

CN I CN III CN II

PC

DC

EMC+TOF

  • EMC prototype + TOF bars
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the different TRB
  • 16 bursts for BBN, IIR, MWD filters

TRB

SODA source

TOF TRB

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SLIDE 12

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA HUB

CN I CN III CN II

PC

DC

EMC+TOF+FT

  • EMC+TOF+FT
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the different TRB
  • 16 bursts for BBN, IIR, MWD filters

TRB

SODA source

TOF TRB FT TRB

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SLIDE 13

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Some facts

Proton beam ~2.5 GeV Estimated deposited energy ~ 200 MeV. Nuclear counter events are expected!

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SLIDE 14

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Only EMC (1 DC) Results

ADC 1 ADC 2

EMC_ADC_channel_11

Each ADC board is represented as 64 channels corresponding High gain/ Low gain component of the photodetectors. Energy spectra obtained from a single crystal (1 LAAPD). Light Pulser peak is from the right side.

Single crystal Single LAAPD

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SLIDE 15

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Only EMC (1 DC) Results

Deposited Energy Deposited energy distribution for a single crystal (both LAAPDs).

Single crystal Both LAAPD

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SLIDE 16

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Only EMC (1 DC) Results

EMC_crystal_5 Energy-dT correlation

Time difference between 2 LAAPDs of 1 crystal in case if only they are present in event. dT-Energy dependence for that crystal.

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SLIDE 17

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Only EMC (1 DC) Results

Time difference between LAAPDs does not change

  • ver minutes.

Synchronization is stable. What about precision?

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SLIDE 18

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Only EMC (1 DC) Results

Red lines show Energy cut around proton beam peak.

Area of interest

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SLIDE 19

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Only EMC (1 DC) Results

Time difference distribution after Energy

  • cut. Values in red square show Gaus fit

parameters. Evolution of time difference between 2 ADC channels belonging to 1 crystal.

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SLIDE 20

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA source

CN I CN III CN II

PC

DC

Only EMC with 2 DC

  • EMC prototype – 9 crystals
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the same TRB
  • 8/16 bursts for BBN
  • CN filtering
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SLIDE 21

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Only EMC (2 DC) Results

Energy deposition distribution for a single crystal caused by proton beam

Single crystal Both LAAPD

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SLIDE 22

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Only EMC (2 DC) Results

Time difference of 2 ADC channels belonging to 1 crystal. Energy cut is applied. Evolution of time difference between 2 ADC channels belonging to 1 crystal.

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SLIDE 23

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA HUB

CN I CN III CN II

PC

DC

EMC+TOF

  • EMC prototype + TOF bars
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the different TRB
  • 16 bursts for BBN, IIR, MWD filters

TRB

SODA source

TOF TRB

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SLIDE 24

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EMC+TOF Results

Time difference between TOF and ADC channels (log scale).

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SLIDE 25

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EMC+TOF Results

Time difference between TOF and ADC channels. Cluster energy distribution (time gated).

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SLIDE 26

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EMC+TOF Results

EMC-TOF time difference in case of energy gate for cluster. Values in red square show Gaus fit parameters. Evolution with time.

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SLIDE 27

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Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs Digitizer 32 photo-sensors

  • Partial pile-up

recovery SFP 2Gbs

TRB

DC

SODA HUB

CN I CN III CN II

PC

DC

EMC+TOF+FT

  • EMC+TOF+FT
  • Light Pulser as a reference
  • 2 DC (1 per ADC board)
  • SODA source on the different TRB
  • 16 bursts for BBN, IIR, MWD filters

TRB

SODA source

TOF TRB FT TRB

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SLIDE 28

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EMC+TOF+FT Results

Time difference between TOF and FT channels (log scale).

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SLIDE 29

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EMC+TOF+FT Results

Time difference between TOF and FT channels.

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SLIDE 30

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EMC+TOF+FT Results

Time difference between FT and EMC channels (log scale).

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SLIDE 31

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EMC+TOF+FT Results

Time difference between FT and EMC channels Cluster energy distribution (time gated).

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SLIDE 32

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EMC+TOF+FT Results

EMC-FT time difference in case of energy gate for cluster. Values in red square show Gaus fit parameters. Evolution with time.

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SLIDE 33

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Summary

  • Current prototype of the DAQ for PANDA showed

possibility to handle data from the multi- component detector system

  • Synchronization of the readout was stable at all

chain configurations

  • Data taking during beamtime helped to reveal

shortcomings and bottlenecks of this system

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SLIDE 34

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Additional Slides

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SLIDE 35

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Cluster Energy

Cluster Energy is defined by sum of the energy deposited during a short time in each crystal . Time window is taken from the left picture.

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SLIDE 36

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SLIDE 37

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EMC+TOF+FT Results

Time scale in seconds

Time gap

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SLIDE 38

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EMC+TOF+FT Results

Time scale in seconds

Light Pulser

Time-Energy distribution for Channel #10