M.Battaglieri - INFN GEForward Tagger Commissioning plan

The Forward Tagger for CLAS12

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New system to detect electrons at small angle and perform quasi-real photo-production experiments

Calorimeter (FT-Cal)electron energy/momentumPhoton energy (ν=E-E')Polarization ε-1 ≈1 + ν2/2EE’PbWO4 crystals with APD/SiPM readout

Scintillation Hodoscope (FT-Hodo)veto for photonsScintillator tiles with WLS readout,…

Tracker (FT-Trck)electron anglesPolarization scattering planeMicroMegas detectors

Moller  Shield

Calorimeter

Tracker

Scin3lla3on  Hodoscope

HTCC      Moller  cup

GEMC  implementa.on

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

FT Commissioning plan

Contact persons✴ FT-Cal: M.Battaglier, R. De Vita✴ FT-Hodo: D. Watts✴ FT-Trck: F.Sabatie, S.Procureur✴ FT-SW: D.Weygand + all above

Commissioning plan1) Quality assurance and system checkout2) System checkout3) Commissioning/Calibration with and w/o beam

Crystals

Light sensors

LED monitoring system

Cooling

Read-outelectronics

Front-endelectronics

Slow-controls

LED Monitoring

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal PbWO-II crystals

PbWO crystalsMeasure the physical/optical properties (size, light yield, decay time, light transmission, radiation hardness, …)

Special equipment The tests will be performed at the ACCOS facility at CERN

DAQ Configuration and TriggerThe facility has all the necessary electronics/daq/trigger

Manpower and time neededThe ACCOS facility tests 20 crystals at time, 100/day therefore we expect to operate the machine for 1 week, 2 people

Software for analysis of resultsACCOS produces automatically the results

Computing resourcesNo need of computer resources

Information to be saved in the databaseSome information will be saved in the DB: size, LY, light transmission, radiation hardness, decay time

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system checkTEST # FT-Cal PbWO-II crystals

ACCOS @ CERN

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal light sensors

Large Area APDMeasure the properties of the light sensors at fixed T (visual inspection, gain%V, linearity, dark current, dead areas …)

Special equipment The tests will be performed in Genova using laser and LED sources

DAQ Configuration and TriggerThe daq will be custom, optimize to the necessary tests

Manpower and time needed3months, 1 person

Software for analysis of resultsCustom system

Computing resourcesNo need of computer resources

Information to be saved in the databasedG/dV, dG/dT, QE, dark current

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

ApdGainTB @ Genova

TEST # FT-Cal light sensors

Dark current

APD gain

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal fe electronics

PreamplifiersMeasure the properties of preamplifiers for APD/SiPM readout: gain, output signal shape for reference pulse, noise and motherboard

Special equipment The tests will be performed in Orsay (and Genova) using local test bench

DAQ Configuration and TriggerNA

Manpower and time needed1month, 1 person

Software for analysis of resultsNA

Computing resourcesNA

Information to be saved in the databaseGain, Trise, Tfall, noise RMS

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

FT-Orsay preampTB @ Orsay

TEST # FT-Cal fe electronics

Signal shape

RMS noise

Linearity

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal cooling system

Thermal shield, FT-Cal vessel, chiller and pipesTest of cooling system including pipe and vessel tightness, T uniformity, cooling power

Special equipment The tests will be performed in Genova using local test benchDAQ Configuration and Trigger

NAManpower and time needed

2 weeks, 1 personSoftware for analysis of results

NAComputing resources

NAInformation to be saved in the databaseTemperatures should be store during data tacking

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

ChillerTB @ Genova

TEST # FT-Cal cooling system

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal RO electronics

fADC, splitters, discriminator, TDCTest of the whole RO chain from the preamp to the stored data: proper functioning of each board and channel: ADC and TDC conversion factors, charge/time linearity, Discriminator minimum threshold

Special equipment The tests will be performed at JLab/Genova using the local electronic test benches

DAQ Configuration and Trigger?

Manpower and time needed?

Software for analysis of resultsNA

Computing resourcesNA

Information to be saved in the databaseADC conversion function, TDC conversion function, Discriminator minimum threshold

TEST # FT-Cal Slow controlsHV for light sensors bias and LV for preamps, motherboards

Test functionality of crates and boards and power/signals distributionSpecial equipment

The tests will be performed in Genova using the local electronic TBDAQ Configuration and Trigger

NAManpower and time needed

1 week 1personSoftware for analysis of results

HV and LV monitoring systemComputing resources

NAInformation to be saved in the database

LV, dead channels

TEST # FT-Cal cablesHV, LV, signal cables

Test of the functionality of all connection cablesSpecial equipment

The tests will be performed in Genova using the local electronic TBDAQ Configuration and Trigger

NAManpower and time needed

1 week 1personSoftware for analysis of results

NVComputing resources NAInformation to be saved in the database: NA

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

CODA-12 @ Genova

TEST # FT-Cal RO electronics and slow controls

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

TEST # FT-Cal monitoring

LED system to monitor gain matching, linearity, light transmissionTest of the functionality of the system, individual LED calibration, light output

Special equipment The tests will be performed in Genova using the local electronic test benches

DAQ Configuration and TriggerNA

Manpower and time needed1 week 1person

Software for analysis of resultsDedicated software to control the system and analyze the results that will be integrated in standard CLAS12 DAQ

Computing resourcesNA

Information to be saved in the databaseIndividual LED light output

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

1) Quality assurance system check

LEDmonitoring @ Genova

TEST # FT-Cal monitoring

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

2) System checkout (Genova and JLab)

TEST # FT-Cal checkout 1

Full checkout of the whole FT-Cal subsystemTest of the full assembled calorimeter:- Vacuum tightness- Cooling and T stability- HV check for individual channels, LV check, cabling check- Light transmission and signal output for individual channel using

the light monitoring system (presence of signal, linearity tests)- Cross-talk between crystals

Special equipment The tests will be performed first in Genova and then repeated before installation in CLAS12

DAQ Configuration and TriggerDAQ bench test Genova / DAQ bench test JLab

Manpower and time needed1 week 1person (x2) + space for JLab tests

Software for analysis of resultsLocal CODA installation

Computing resourcesINFN-GE CODA setup for tests in Genova and JLab

Information to be saved in the databaseNA

TEST # FT-Cal checkout 2 – Cosmic rays

Full checkout of the FT-Cal using stand-alone cosmic ray setup

Measure the FT-Cal response to cosmic ray for (individually)- gain matching- absolute light output - relative timing

Special equipment The tests will be performed first in Genova and then repeated before installation in CLAS12

DAQ Configuration and TriggerDAQ bench test Genova / DAQ bench test JLab

Manpower and time needed1 week 1person (x2) + space for JLab tests

Software for analysis of resultsLocal CODA installation + dedicated monitoring tools

Computing resourcesINFN-GE CODA setup for tests in Genova and JLab

Information to be saved in the databaseNA

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

3) Commissioning & Calibration with and w/o beam

1. Special runs with LED system (FT-CAL):• Test channel functionality• Test channel linearity and gain stability• Determine relative timing calibration• Study noise and resolution

2. Calibration with cosmic rays (full FT system)• Gain matching (FT-Cal and FT-Hodo)• Determine absolute light output (FT-Cal and FT-Hodo)• Determine time synchronization between FT detectors• Determine time synchronization with respect to CLAS12 (full FT)• Measure FT-Trck response to cosmic rays (see detailed MicriMegas commisioning plan)

3. In-beam calibrationA. Response to elastic electrons:• FT-Cal energy calibration and resolution study• FT-Hodo gain matching and efficiency studies• Final timing calibration

B. Response to pi0 (single pi0 production):• FT-Hodo veto efficiency• FT-Cal resolution via Mpi0 reconstruction• Background studies

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

3) Commissioning & Calibration with and w/o beam

Cosmic ray calibration:• JLab DAQ based on fADC and running CODA• Response to cosmic rays measured using external

scintillator bars for triggering• Relative crystal energy calibration determined by

comparison of energy spectra• Absolute energy calibration determined by

comparison with GEANT4 simulations

3x3 CrystalPrototype

Pedestal

MIPs

-25° C-15° C-5° C+5° C+18° C

DataMC

FT-Cal Prototype Calibration

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

3) Commissioning & Calibration with and w/o beam

FT-Cal Calibration strategyPrototype test at LNF-BTFResponse to 500 MeV electrons:• Crystal relative energy calibration

performed by comparing response to electron of known energy

• Absolute energy calibration via comparison with GEANT4 simulations

Study of resolution for full cluster reconstruction to test of energy calibration

4x4 CrystalPrototype

No threshold5 MeV threshold

Forward Tagger Commissioning plan M.Battaglieri - INFN GE

FT-Cal - Test of all crystals at CERN within June 2013 - Delivery of all APD in Genova within July 2013 - Single crystal assembly  (crystal+apd+wrapping) within December 2013 - Mechanical structure  ready  within September 2013- Other ancillary components ready for December 2013 - FT-Cal assembly within Feb 2014

FT-Hodo - Scintillator/fibers/sipm procurement within June 2013 - Electronics ready for June 2013 - FT-Hodo assembly ready for the end of 2013 - FT-Hodo shipping in Genova within Jan 2014

FT-Trck - Assembled and tested in Saclay by the end of 2013 and shipped to Genova at the beginning of 2014.

Full FT- Full FT assembly in Genova within June 2014 and dismounting for shipping October 2014- Delivery to Jlab expected for the end of the summer 2014 - re-Assembly of the whole FT at JLab at the end of the summer 2014- Installation in CLAS12 within Oct 2014

FT scheduling

April 2014

April 2014

May 2014

End of the 2014

Beginning of 2015April 2015