ProtoDUNE-DP Light Data Clara Cuesta on behalf of the CIEMAT team - - PowerPoint PPT Presentation

ProtoDUNE-DP Light Data

Clara Cuesta on behalf of the CIEMAT team October, 31st 2019

Photon Detection System (PDS)

2 Clara Cuesta | ProtoDUNE Dual Phase Light Data

36 8” cryogenic photomultipliers (PMTs)

JINST 13 (2018) T10006

Wavelength-shifter: PEN / TPB coating on PMT Voltage divider base + single HV-signal cable + splitter (external) DAQ system (external) Light calibration system: LED (external) & fiber based

JINST 14 (2019) T04001 PMT Voltage divider base + single HV-signal cable fiber for light calibration Wavelength-shifter ground grid PDS placed below the ground grid ProtoDUNE-DP

Light DAQ

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CIEMAT acquisition control software MIDAS Calibration box HV Power supply ADC CAEN v1740

Light DAQ

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CIEMAT acquisition control software MIDAS Calibration box HV Power supply ADC CAEN v1740 CAEN V1740 main specifications:

• 64 channels with 12 bits and 2Vpp dynamic range.
• Configurable sampling period between 16 ns and 2048 ns.
• Capable of producing a trigger signal based on the coincidence of a programmable number of

PMT signals over a given threshold level (all parameters on-line programmable).

• Connected to the computer by a 80 MB/s optical link (CAEN CONET2).

North

X X Y Y

S.17 C.21 BC.38 F .5 BF .5.3 S.11 C.7 BC.2 F .5 BF .5.2 S.18 C.3 BC.11 F .5 BF .5.7 S.16 C.1 BC.40 F .5 BF .5.6 S.10 C.14 BC.36 F .5 BF .5.4 S.15 C.33 BC.23 F .5 BF .5.5 S.23 C.28 BC.29 F .2 BF .2.7 S.28 C.38 BC.13 F .2 BF .2.6 S.19 C.34 BC.22 F .2 BF .2.5 S.22 C.20 BC.34 F .2 BF .2.4 S.24 C.2 BC.17 F .2 BF .2.3 S.35 C.25 BC.35 F .2 BF .2.2 S.3 C.17 BC.5 F .6 BF .6.2 S.7 C.24 BC.16 F .6 BF .6.7 S.8 C.11 BC.6 F .6 BF .6.5 S.31 C.30 BC.14 F .4 BF .1.5 S.12 C.22 BC.27 F .6 BF .6.3 S.5 C.18 BC.33 F .6 BF .6.4 S.33 C.12 BC.7 F .4 BF .1.2 S.32 C.9 BC.25 F .4 BF .1.3 S.4 C.5 BC.39 F .7 BF .7.3 S.1 C.27 BC.24 F .7 BF .7.4 S.9 C.4 BC.20 F .6 BF .6.1 S.26 C.26 BC.28 F .4 BF .1.1 S.29 C.37 BC.30 F .3 BF .3.3 S.21 C.10 BC.31 F .3 BF .3.4 S.34 C.29 BC.15 F .3 BF .3.7 S.36 C.19 BC.1 F .3 BF .3.5 S.2 C.32 BC.10 F .7 BF .7.2

S: splitter C: PMT cable BC: base cable F: 22.5m-fiber BF: bundle-fiber Colored: TPB

#1 #1 #1 *cables: 1,3,4,5,6,7,8,11,14,17,18,21,22,24,27,31,32,33; 35:spare *fibers: 5&6&7 *fibers: 2&3&4 *cables: 2,9,10,12,13,15,16,19,20,25,26,28,29,30,34,36,37,38; 23:spare

Door

fiber #0 fiber #1 1 8 2 18 16 3 9 20 4 17 19 42 21 33 43 44 41 32 40 5 10 22 11 6 7 12 13 37 23 34 45 35 46 36 47

CRP #1 CRP #2

5FA0139 FA0107 6 7

S.27 C.16 BC.32 F .4 BF .1.6

3

4.1

2

S.14 C.31 BC.26 F .7 BF .7.5 FA0146 FA0121 FA0115 FA0136 FA0119 FA0106 FA0114 FA0110 FA0132 FA0135 FA0124 FA0130 FA0148 S.6 C.6 BC.41 F .6 BF .6.6 S.25 C.15 BC.12 F .4 BF .1.7 S.30 C.36 BC.14 F .4 BF .1.4 S.13 C.8 BC.37 F .7 BF .7.6 FA0147 FA0113 FA0111 FA0150 FA0133 FA0156 FA0139 FA0107 FA0137 FA0104 FA0153 FA0134 FA0151 FC0004 FC0005 FA0122 FA0155 FA0149 FA0105 FA0157 FA0112 FA0129 FA0116 S.20 C.13 BC.21 F .3 BF .3.6

LEGEND

PDS Layout

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6x TPB coated PMTs 30x PEN sheet PMTs

ADC ch# PMT serial#

4 PMTs connected to scope, now: ADC 2, 18, 17, 41

5 trigger groups (next slide)

PDS trigger

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North

X X Y Y

Door

CRP #1 CRP #2

LEGEND

5 trigger groups (preliminary)

Data taken

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GAr purging Jul 8 Aug 9 Nominal LAr level reached Jun 24 LAr filling Drift field on Jul 5 PMTs covered by LAr Aug 11 LEMs on Aug 29

A lot of interesting light data already taken:

• GAr (runs @ RT)
• LAr w/o fields (S1)
• LAr w/ fields (S1 + S2)
• Runs w/ PMT & random triggers
• Runs triggering w/ external panels
• PMT calibration runs

Data location

• Data are taken in the Light DAQ computer as a midas file (mid), then

converted to root, and sent to the long-term eos location every day.

• All data is long-term saved in:

/eos/experiment/neutplatform/protodune/rawdata/np02/PMT

• Raw data as taken from Midas are saved in:

/eos/experiment/neutplatform/protodune/rawdata/np02/PMT/midas

• ROOT data converted after using midas2root are saved in

/eos/experiment/neutplatform/protodune/rawdata/np02/PMT/ROOT

• Data are also copied to CASTOR:
• A script runs every night to create the json files needed to send the

data to CASTOR.

• They are uploaded in batches using the dropbox folder in EOS.

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Run information

• Data taken are described in the elog

https://pddpelog.web.cern.ch/elisa/display

• Google spreadsheet “Light runs” summarizing run information:

https://docs.google.com/spreadsheets/d/1xnHmHhAyuBEnDiwCGrf7 u8CXxpMyOMKAB1AnoZpLIaA/edit#gid=1315921346 Run number, date, run goal, trigger, field conditions, Elog#...

• Contact me (clara.cuesta@ciemat.es) in case of questions.

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Data analysis organization

• Using our own code to extract information (charge, amplitude,

scintillation profile, baseline, peak time…)

• Aiming to include light data in LArSoft matched with the

charge data.

• ProtoDUNE-DP PDS geometry in LArSoft.
• Ana Gallego-Ros , José Soto-Otón,

María Artero (MSc), Diana Navas, and Clara Cuesta from CIEMAT are working on the light data analysis.

• Contact us (clara.cuesta@ciemat.es) if you are willing to join!

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On-going analysis topics

• Gain

✔ G vs HV, gain stability, top fibers ✔ PEN/TPB light reduction factor

• Noise and system limitations

✔ Electronics (pick-up) noise ✔ System limitations

• Dark rate - Single photo-electron characterization
• S1 study

✔ Purity (!slow evolution) ✔ Cosmic muons from external panels

• S1 (shape and rate) vs detector conditions
• S2 study
• S2 characterization (shape and rate) vs detector conditions

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First results

• All 36 PMTs operational
• Low noise < 1 ADC
• PMTs are stable
• Expected purity evolution
• PEN PMT 12% TPB PMT amplitude
• Light track observed with panels
• Electroluminescence light seen by all

PMTs (>6 m away from PMTs)

Clara Cuesta | ProtoDUNE Dual Phase Light Data 12 TPB PMT PEN PMT PEs with panels

Preliminary

Clara Cuesta | ProtoDUNE Dual Phase Light Data

PDS installation

Completed

Data taking in GAr and LAr w/o field

June-July 2019

Data taking in LAr w field

August 2019

Summary

D a t a a n a l y s i s j u s t s t a r t e d