M.Battaglieri - INFN GE Forward Tagger Commissioning plan The Forward Tagger for CLAS12 e - * CLAS12 p e - Forward Tagger 1 New system to detect electrons at small angle and perform quasi-real photo-production experiments Calorimeter (FT-Cal) electron energy/momentum Photon energy (ν=E-E') Polarization ε -1 ≈1 + ν 2 /2EE’ PbWO 4 crystals with APD/SiPM readout Scintillation Hodoscope (FT-Hodo) veto for photons Scintillator tiles with WLS readout,… Tracker (FT-Trck) electron angles Polarization scattering plane MicroMegas detectors Moller Shield Calorimeter Tracker Scin3lla3on Hodoscope HTCC Moller cup GEMC implementa.on
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M.Battaglieri - INFN GEForward Tagger Commissioning plan
The Forward Tagger for CLAS12
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CLAS12!
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1
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,…
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