EIC INFN-GE R&D on Calorimetry and Streaming Readout - A. Celentano for the INFN-GE / INFN-Tor Vergata groups
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EIC
INFN-GE R&D on Calorimetry and
Streaming Readout
A. Celentano for the INFN-GE / INFN-Tor Vergata groups
EIC_NET referees meeting, Sept. 2020
EM calorimetry at EIC Motivation: • Particle identification: important for discriminating single photons from ! " /$ decay and for e- • Particle Reconstruction: driven by need to accurately reconstruct the 4-momentum of scattered electrons at small angles, where the momentum (or energy) resolution from the tracker is poor due to the low ∫ &'( value ($ < −2 region) Requirements: • Good resolution in angle to at least 1° to distinguish between clusters • Energy resolution to a few % / , for measurements of cluster energy • Ability to withstand radiation down to at least 1° wrt beam line
Calorimeters @ EIC
• Each kinematic region has
different key physics
observables and detector
constraints, thus requiring a
different technology
Summary of EIC R&D detector handbook, Calorimetry section
EIC R&D 1 - Calorimetry Goal: develop cost effective, flexible techniques to build compact sampling calorimeters that meet the EIC physics requirements – specific attention toward minimizing the constant resolution term, ultimately affecting the calorimeters performances. Ongoing Efforts: W/SciFi (BNL/IUC) • Based on early R&D activity that lead to full implementation into sPHENIX detector W/Shashlik (UTSFM/BNL) • Promising alternative to W/SciFi, 6 prototypes constructed and being tested Forward Hadron Calorimetry (UCLA) • Investigating dual readout HCAL (w SiPM) measuring time development of hadronic shower. Fe/Sc solution excluded (signal too week for event- by-event corrections), investigating Pb/Sc Homogeneous Calorimetry (CUA/JLAB/INFN) • Focus on PbWO4 crystals as the best option for forward e- region. Ongoing characterization of samples from different vendors. • Investigating the use of alternative materials to reduce costs / production times.
EIC calorimetry with crystals
PbWO4 is the leading option for EIC calorimeters in the e- forward direction (! < −$).
INFN activity in collaboration with CUA:
• Share the expertise on crystals quality assurance with LED-based light
transmission monitoring system – one system on-loan to CUA
• Participate to the Hall-D beam-test (2020/2021), providing expertise for a
SiPM-based readout and participating to the data analysis.
• Participate to the development of MC simulations for the EIC EM calorimeter
(new activity 2020 – M. Bondi’)
• Geant4-based simulation (g4e framework) of the EIC electron cap: development of the
code for crystal response (PbWO4 or scintillation glass) and for EM clustering. Study of the
detector performance at different electron energies.
New materials for homogeneous calorimetry
• PbWO4 crystals are ideal, but also have limitations (light yield) and are expensive ($15-25/cm3) –
very large volume detectors are probably unaffordable
• Glass-based scintillators are a cost-effective alternative to crystals, in particular EMCal regions
with relaxed resolution requirements
• First small samples produced at CUA/VSL/Scintilex are radiation hard, have reasonable radiation length
and timing, and a factor of ten or higher light yield vs PbWO4
• R&D activity just started – focusing on increasing density and scaling-up dimensions
• Beam test program in 2020/2021 at Jlab
• INFN involvement: Characterization of CUA-manufactured glass samples with a large area cosmic-rays
telescope
Scintillating glasses characterization @ INFN-Genova
Goal:
● Measure the main parameters of a large number of samples (light
yield, rad. length, timing)
● Test different readout options
Infrastructure:
• A EEE-like telescope (three Multi-gap Resistive Plate Chambers,
80x160 cm2) has been assembled to map out material response over
large area in short time – synergy with ALICE/EEE
• Using streaming readout boards developed at INFN for EIC streaming
readout – compatible with PMT/SiPM/APD
• Absolute time stamp from readout board allows to correlate
hits with cosmic—rays tracks from chambers
• Streaming readout system currently being assembled (milestone
2020). Based on WaveBoard digitizer + TriDAS DAQ SRO system
• GPS synchronization between telescope and SRO verified
• SRO DAQ under installation
• Test setup while waiting for scintillating glass samples: plastic
scintillator plate with 4 SiPM readout. Test coincidence between
two systems
Milestone 2020: complete assembly of cosmic—ray
telescope for glasses characterization: 40%
A streaming readout system for EIC
• EIC R&D consortium (2018), with INFN strong involvement (M.
Battaglieri is co-PI)
• Different coherent efforts toward developing a complete
triggerless readout system for all EIC detectors
• JLAB: FADC-based streaming readout using VXS backplane
• JLAB: streaming readout for a TPC
• BNL: Sphenix (partial) streaming readout
• INFN: streaming readout for calorimetry
• Particular effort on technology validation with
experimental data – comparing to traditional
triggered solutions
Streaming readout activity @ INFN 2019/2020
• We participate to the eR&D-23 activity: monthly phone meetings and dedicated workshops (twice per year).
• Last meeting: May 2020 (remote-only) EIC Yellow Report activities
• Strong involvement in the EIC »Yellow Report» initiative.
• A. Celentano is co-convener of the «Readout and DAQ» working group.
• Main experimental activity: validation of the new DAQ approach.
Dedicated personell:
• 1 post-doc hired to work through “Ministero degli Esteri - progetti di Grande Rilevanza” funds
• 1 master thesis student, currently applying to PhD program
Streaming readout activity @ INFN 2019/2020
In January/February 2020 we tested our TriDAS-based SRO system using the FT-Cal calorimeter in Hall-B at Jefferson
Laboratory
• PbWO4 based calorimeter with APD readout (332 channels) to detect scattered e- and photons at small angles
• FADC-based readout (JLab FA250) with a modified firmware to allow for SRO operations
After preliminary tests to setup the system, we acquired few hours of data during Hall-B nuclear target tests (Lead)
This allowed us to collect enough statistics for a physics analysis: inclusive !0 production on a Lead target (S. Vallarino
master thesis)
• Data acquired in SRO mode with a “minimum-bias”
condition: at least one crystal with energy > 2 GeV
• A simple clustering algorithm was implemented
online in “tagging-mode” only.
• Offline-analysis to quantify the single-cluster
detection and reconstruction efficiency.
• Preliminary result: efficiency > 99% for clusters
above threshold.Streaming readout activity @ INFN 2019/2020
In January/February 2020 we tested our SRO system using the FT-Cal calorimeter in Hall-B at Jefferson Laboratory
• PbWO4 based calorimeter with APD readout (332 channels) to detect scattered e- and photons at small angles
• FADC-based readout (JLab FA250) with a modified firmware to allow for SRO operations
After preliminary tests to setup the system, we acquired few hours of data during Hall-B nuclear target tests (Lead)
This allowed us to collect enough statistics for a physics analysis: inclusive !0 production on a Lead target (S. Vallarino
master thesis)
• Off-line analysis to measure the inclusive !0
production: !0 identified via the 2-photons decay
• Ad-hoc corrections for time-walk and energy leak.
• Data currently being used to optimize SRO
selection algorithms for new tests in Hall-B at
JLab.
• Measured yield compared with the prediction from a
theoretical/phenomenological calculation: preliminary
Dual peak due to elements (Al
results show agreement within factor < 2. foils) along the beamline
M (MeV)
Milestone 2021: complete analysis of data collected during the SRO tests in Jan/Feb 2020Streaming readout activity @ INFN – 2020/2021
• We developed and successfully tested a SRO system based
on discrete FEE boards
• INFN WaveBoard (1.0 and 2.0) (250 MHz, 14 bit,
digitizer for SiPMs – including FE amplifier and bias
voltage)
• JLab FA250 (250 MHz, 12 bit, general purpose FADC
digitizer)
• The natural evolution of this activity is the extension of the
system to also include integrated FE systems (ASICS).
• In 2021, we propose to consider the CAEN DT5202 test
case (readout board for the CITIRIC ASIC: 64 ch SiPM
readout system)
• Same FPGA system as in WaveBoard (Zynq FPGA with
dual-ARM core) for a simpler integration within the
TriDAS-based SRO DAQ system.Summary: calorimetry/streaming RO activity @ INFN in 2020-2021 2020 • Complete assembly of cosmic ray 2021: telescope with a streaming readout DAQ • Complete data analysis of 2020 test beam (MILESTONE 2020: 40%) in Hall-B with FT-Cal (MILESTONE 2021) • Characterize scintillating glasses (sj to • Test SRO system with scintillation-glass samples availability from CUA) based calorimeter prototype • Prototype SRO characterization with a test • R&D on how to extend current SRO system beam at JLab: Jan/Feb 2020 and Aug/Sep (discrete channels) to include multi- 2020 channel readout solutions (ASICs).
Summary: external funds • MAECI - Progetto di Grande Rilevanza Tecnologica Italia-USA “Un sistema di acquisizione triggerless per l'Electron Ion Collider (EIC)” • 55keuro per il 2020 (prevalemtenete per spese di personale) • Cifra simile 2021 • Progetto eRD23 (streaming read-out): TOTALE 2020: ~ 90 keuro • ~20 k$ per il 2020 • Progetto eRD1 (calorimetria): • ~ 20 k$ per il 2020 (da definire)
Summary: 2021 requests
Partecipazione a riunioni EIC in USA e in Italia 2.5
Meeting per attivita' di spettroscopia adronica ad EIC 1.0
Partecipazione a meeting su streaming readout in USA (3 gg x 3 persone) 3.0
MISSIONI
Test sistema streaming readout a JLab (FT in Hall-B, prototipo di calorimetro con 2.0
vetri scintillanti pesanti in Hall-D) – SJ approvazione del test e disponibilita’ fascio.
TOTALE 5.5+2.0
Materiale per sviluppo e caratterizzazione di prototipo di sistema di streaming 6.0
readout basato su ASIC per lettura di SiPM - prototipo CAEN DT5202
CONSUMO TOTALE 6.0You can also read
