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

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 one SuperBurst event (16 bursts) equal 38.6 μs.

| 3 Burst Building Network 1562500 SuperBursts per minute ≈ 26040 SuperBursts per second

| 4 SODANET protocol How can we check a stability of synchronization? Data is read out as a one SuperBurst event (16 bursts) equal 38.6 μs.

| 5 Final Setup at COSY (22.02.19) o n s V p r o t ~ 2 . 5 G e

| 6 Final Setup at COSY (22.02.19) o n s V p r o t ~ 2 . 5 G e

| 7 Final Setup at COSY (22.02.19) o n s V p r o t ~ 2 . 5 G e

| 8 Measurement Strategy EMC To check the synchronization quality of SODANET and the readout Q A D d n a E T N A D S O stability of DAQ system in general, a strategy of growing complexity was proposed: ● Only EMC Readout with 1 DC TOF ● Only EMC Readout with 2 DC FT ● EMC+TOF Readout ● EMC+TOF+FT Readout

| 9 Only EMC with 1 DC EMC prototype – 9 crystals ● Light Pulser as a reference ● 1 DC ● SODA source on the same TRB ● Digitizer 8/16 bursts for BBN 32 photo-sensors ● Partial pile-up ● CN filtering recovery ● CN I SFP 2Gbs DC Digitizer PC CN III 32 photo-sensors Partial pile-up ● recovery SODA CN II SFP 2Gbs TRB

| 10 Only EMC with 2 DC EMC prototype – 9 crystals ● Light Pulser as a reference ● 2 DC (1 per ADC board) ● Digitizer SODA source on the same TRB ● 32 photo-sensors Partial pile-up ● 8/16 bursts for BBN ● recovery CN filtering ● SFP 2Gbs DC CN I TRB Digitizer PC CN III DC 32 photo-sensors Partial pile-up ● recovery SODA CN II SFP 2Gbs source

| 11 EMC+TOF Digitizer EMC prototype + TOF bars ● 32 photo-sensors Partial pile-up ● Light Pulser as a reference ● recovery 2 DC (1 per ADC board) ● SODA source on the different TRB DC SFP 2Gbs ● 16 bursts for BBN, IIR, MWD filters ● TRB Digitizer DC 32 photo-sensors Partial pile-up ● recovery CN I SODA HUB SFP 2Gbs PC CN III TRB TOF CN II TRB SODA source

| 12 EMC+TOF+FT Digitizer 32 photo-sensors EMC+TOF+FT ● Partial pile-up ● DC recovery Light Pulser as a reference ● TRB 2 DC (1 per ADC board) ● SFP 2Gbs SODA source on the different TRB ● DC 16 bursts for BBN, IIR, MWD filters ● Digitizer SODA 32 photo-sensors HUB Partial pile-up ● recovery CN I TOF SFP 2Gbs TRB PC CN III TRB FT CN II TRB SODA source

| 13 Some facts Proton beam ~2.5 GeV Estimated deposited energy ~ 200 MeV. Nuclear counter events are expected!

| 14 Only EMC (1 DC) Results EMC_ADC_channel_11 ADC 1 ADC 2 Single crystal Single LAAPD Each ADC board is represented as Energy spectra obtained from a single 64 channels corresponding High gain/ crystal (1 LAAPD). Light Pulser peak is Low gain component of the from the right side. photodetectors.

| 15 Only EMC (1 DC) Results Deposited Energy Single crystal Both LAAPD Deposited energy distribution for a single crystal (both LAAPDs).

| 16 Only EMC (1 DC) Results EMC_crystal_5 Energy-dT correlation Time difference between 2 LAAPDs of 1 crystal dT-Energy dependence for that crystal. in case if only they are present in event.

| 17 Only EMC (1 DC) Results Time difference between Synchronization is stable. LAAPDs does not change What about precision? over minutes.

| 18 Only EMC (1 DC) Results Area of interest Red lines show Energy cut around proton beam peak.

| 19 Only EMC (1 DC) Results Time difference distribution after Energy Evolution of time difference between 2 cut. Values in red square show Gaus fit ADC channels belonging to 1 crystal. parameters.

| 20 Only EMC with 2 DC EMC prototype – 9 crystals ● Light Pulser as a reference ● 2 DC (1 per ADC board) ● Digitizer SODA source on the same TRB ● 32 photo-sensors Partial pile-up ● 8/16 bursts for BBN ● recovery CN filtering ● SFP 2Gbs DC CN I TRB Digitizer PC CN III DC 32 photo-sensors Partial pile-up ● recovery SODA CN II SFP 2Gbs source

| 21 Only EMC (2 DC) Results Single crystal Both LAAPD Energy deposition distribution for a single crystal caused by proton beam

| 22 Only EMC (2 DC) Results Time difference of 2 ADC channels Evolution of time difference between 2 belonging to 1 crystal. Energy cut is ADC channels belonging to 1 crystal. applied.

| 23 EMC+TOF Digitizer EMC prototype + TOF bars ● 32 photo-sensors Partial pile-up ● Light Pulser as a reference ● recovery 2 DC (1 per ADC board) ● SODA source on the different TRB DC SFP 2Gbs ● 16 bursts for BBN, IIR, MWD filters ● TRB Digitizer DC 32 photo-sensors Partial pile-up ● recovery CN I SODA HUB SFP 2Gbs PC CN III TRB TOF CN II TRB SODA source

| 24 EMC+TOF Results Time difference between TOF and ADC channels (log scale).

| 25 EMC+TOF Results Cluster energy distribution (time gated). Time difference between TOF and ADC channels.

| 26 EMC+TOF Results EMC-TOF time difference in case of Evolution with time. energy gate for cluster. Values in red square show Gaus fit parameters.

| 27 EMC+TOF+FT Digitizer 32 photo-sensors EMC+TOF+FT ● Partial pile-up ● DC recovery Light Pulser as a reference ● TRB 2 DC (1 per ADC board) ● SFP 2Gbs SODA source on the different TRB ● DC 16 bursts for BBN, IIR, MWD filters ● Digitizer SODA 32 photo-sensors HUB Partial pile-up ● recovery CN I TOF SFP 2Gbs TRB PC CN III TRB FT CN II TRB SODA source

| 28 EMC+TOF+FT Results Time difference between TOF and FT channels (log scale).

| 29 EMC+TOF+FT Results Time difference between TOF and FT channels.

| 30 EMC+TOF+FT Results Time difference between FT and EMC channels (log scale).

| 31 EMC+TOF+FT Results Time difference between FT and EMC Cluster energy distribution (time gated). channels

| 32 EMC+TOF+FT Results EMC-FT time difference in case of Evolution with time. energy gate for cluster. Values in red square show Gaus fit parameters.

| 33 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

| 34 Additional Slides

| 35 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.

| 36

| 37 EMC+TOF+FT Results Time scale in seconds Time gap

| 38 EMC+TOF+FT Results Time scale in seconds Light Pulser Time-Energy distribution for Channel #10