Status Report & Plans - Work package 1: Physics & Simulation - 16/9/2020 Meeting with RD-FA Referees
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Work package 1: Physics & Simulation
Status Report & Plans
16/9/2020 Meeting with RD-FA Referees
P. Azzi (PD), S. Braibant (BO)
Summary since last meeting March 2020
International collaboration activities:
due to COVID trips planned to exchange students with IHEP (via
FEST) have been blocked.
Collaboration mantained with FCC-ee and CEPC communities
via virtual meetings for preparation of documents and planning
of workshops
Participation to effort for Snowmass process for R&D and
analysis(LOIs)
Continued development of IDEA FullSim and FastSim (DELPHES)
description and performance studies.
Continued development of a global software framework effort for
future experiments/machines (Key4HEP) in collaboration with both
FCC-ee and CEPC
RD-FA Referee Mtg - WG1 Report 16/09/2020 2
IDEA Tracker System Simulation Status
G. Tassielli (LE), W. Elmetenawee(BA), N. DeFilippis(BA)
Standalone GEANT implementation of drift chamber: code development for
a coherent description of both DriftChamber and DR Calorimeter in a
standalone Geant framework in progress
The IDEA full simulation
Simplified description of drift chamber in FCCSW already available, can now
be compared with the more detailed one, in collaboration with CERN fellow
(V. Volkl, CERN)
an to provide a standalone Geant4
RD-FA Referee Mtg simulation
- WG1 Report 16/09/2020 for IDEA dete
3
Dual Readout Calorimeter Status
L. Pezzotti(PV), M. Antonello (MI), J. Vivarelli (Sussex)
Geant4 fully projective fiber calorimeter description available in GitHub/lxplus
Collaboration with South Korea in progress (2Million grant obtained by SK)
Geant4
porting to DD4HEP and FCCSW ongoing Simulation
(w/ CERN)
Performance studies with single particles, jets and physics
Currently events
we support two Geant4 appli
Reconstruction code developed to reconstructThey are both2evolving but can
jets final already
states.
Exclusive
rojective jet clustering
tower-based dual-readout with N=2. Now moving
calorimeter. • INFNoncode
to 4on
and 6.
[github].
l studies.
How to run locally or with cvmfs
sourcing [TWiki].
Geometry adapted to the IDEA
drift chamber volume.
• South Korea code on [github].
RD-FA Referee Mtg - WG1 Report 16/09/2020 4
Physics benchmarks - 2 jets final state
Physics benchmarks - 2 jets final states
e +e − → HZ → χ̃0 χ̃0 jj
Only decays to u,d,s,c
c semileptonic decays
excluded
e +e − → WW → νμμjj Contribution of tagged muon
from Monte Carlo truth
subtracted from the
calorimeter signal
c semileptonic decays excluded
e +e − → HZ → bbνν b semi-leptonic
decays excluded
Still very well separated peaks when solenoid is included! From INFN group
Lorenzo Pezzotti - FCCSW Meeting 5/6/2020 15
RD-FA Referee Mtg - WG1 Report 16/09/2020 5
Physics benchmarks - 2 photons final states
Physics benchmarks - 2-photons final states
e +e − → HZ → γγνν
5 million events fully simulated at Sussex
University.
Starting from calibration constants estimated
with particle gun, after few energy corrections,
the resolution on the mass term is consistent
with the single photon energy resolution.
From INFN group
Lorenzo Pezzotti - FCCSW Meeting 5/6/2020 16
RD-FA Referee Mtg - WG1 Report 16/09/2020 6Delphes Fast Simulation of IDEA Detector Concept
E. Fontanesi, S. Braibant (BO), F. Bedeschi, L. Pezzotti(PV)
Delphes provides the response of a multipurpose detector in a parameterised way
Addition to the official IDEA Delphes card of the covariance matrix description for tracks.
Crucial feature for improving development of b- and c-tagging algorithm in a more
realistic way
Validation in progress in view of usage for « case studies »
σ p p T versus p T (GeV) 0.16
Events/0.5 GeV
T
0.14 IDEA
Covariance
Delphes
0.12
Delphes Cov
0.1
0.08
0.06
0.04
0.02
Performance with vertex detector
0
+ drift chamber + Si wrappers 120 122 124 126 128 130 132 134
Recoil mass (GeV)
7
RD-FA Referee Mtg - WG1 Report 16/09/2020 7Deep Learning for Tau-ID
S. Giagu,S.Francescato, L.Sabetta(RM)
Sviluppo di modelli basati su DeepNN models per tau ID nel calorimetro dual-readout e detector
IDEA τ → final state
0 π 0π −ντ
e −−ν̄eντ
Stima e ottimizzazione delle prestazioni/disegno del calorimetro dual-readout
1
Studio preliminare: identificazione decadimenti di tau singoli in un modulo del prototipo del
2 μ ν̄μντ
calorimetro
3 π −ντ
Ongoing: Z→ττ vs Z→qq con full simulation del detector IDEA completo
4 π −π −π +ντ
π 0π 0π −ντ
2x2
2x2
2x2
2x2
2x2
5
3x3
3x3
3x3
3x3
3x3
3x3
3x3
3x3
6 classes
111x111x10
probability
input
output
64 128 256 512 512 1536 6
256 512 512 1536
CNN 1.02
Rejection (1-Efficiency) for the others τ decays
1
0.98
0.96
111 0.94 Average Accuracy
CHERENKOV 0.92
99.6%
0.9
SCINT
0.88
ROC Curve
111 0.86
0.65 0.7 0.75 0.8 0.85 0.9 0.95 1
“immagini” formate da gruppi di fibre canali: Efficiency for a given τ decay
feature estratte dall’elettronica di lettura dei SiPM
RD-FA Referee Mtg - WG1 Report 16/09/2020 8Common software framework key4HEP
P. Giacomelli(BO), P. Azzi (PD)
INFN took initiative to propose towards a common software framework
for different experiments at future colliders (Meetings in 06/2019,
01/2020)
Consensus reached among software and computing experts on:
Common Event Data Model (EDM4HEP) managed by the PODIO-
like tool
Common Turnkey Software Stack (Key4HEP) connecting and
extending the individual packages to enable a complete data
processing framework
As of today first version of key4HEP available on CVMFS that can
be installed and tested https://key4hep.github.io/key4hep-doc/setup-
and-getting-started/README.html
Regular weekly meetings with presence of INFN, CERN, IHEP, DESY
etc. https://codimd.web.cern.ch/qbTPSTfhQayEDwXPfmQRXg?both
RD-FA Referee Mtg - WG1 Report 16/09/2020 9Detector Requirements Studies: benchmarks & plans
For FCC-ee and CEPC: focus on benchmark physics studies to extract detector
performance requirement.
To push realization of studies and preliminary detector concepts and proto-collaborations
by 2023 FCC-ee management created a new Physics Performance Coordination role (P.
Azzi (INFN), E. Perez(CERN).
Study physics cases at each energy scale (Z, H, top) to better define the real
detector requirements for FCC-ee. Summary here: https://indico.cern.ch/event/
951830/contributions/4000220/attachments/2095812/3522643/SNOWMASS21-EF0-
NF0-RF0-TF0-IF0-CompF0-017.pdf
Profit of the Snowmass process to submit LOIs of interest to INFN work (complete
list https://indico.cern.ch/event/951830) and extend international collaboration:
Instrumentation Frontier: IDEA Detector (Bedeschi et al. ), IDEA Drift Chamber for
a Lepton Collider (F. Grancagnolo et al.) , mu-RWell Detector (P. Giacomelli et al.) ,
Dual Readout Calorimetry (R. Ferrari et al.)
Energy Frontier: Search for LLP at the FCC-ee (P. Azzi et al.) , Top quark Physics
at the FCC-ee (P. Azzi et al.), Measurement of the W mass (P. Azzurri et al.)
Computing Frontier: Key4Hep (P. Giacomelli et al.)
RD-FA Referee Mtg - WG1 Report 16/09/2020 10Richieste di Calcolo RD_FCC
Programma di lavoro 2021 focalizzato su:
sviluppo simulazione Full per i rivelatori componenti di IDEA e studio delle prestazioni
sviluppo di nuovi algoritmi di ricostruzione e identificazione
sviluppo dei « case studies » per lo studio di richieste di fisica sul design dei rivelatori
Nuovo software framework (Key4HEP) in progress. Primi studi pero’ con Geant standalone
FullSim e Delphes.
Dimensione eventi per FCC-ee/CEPC ~piccola (da esperienza pregressa), ma alta statstica
necessaria a Tera-Z e diverse analisi previste.
es FullSim del DR calorimetro per ora salvata solo poca informazione e pochi eventi
(200MB per 50K-> scala di un fattore 100 se si salva piu’ info). Simile rapporto per CPU.
Richiesta per 2021 con le informazioni che abbiamo ora scalando in modo realistico:
100TB di disco al CNAF
1 kspec di CPU
Momento molto fluido (COVID non ha aiutato), probabile aumento di collaboratori e di analisi
piu’ complete durante il 2021 focalizzato su preparazione per TDR per le proto-collaboration
dei rivelatori
RD-FA Referee Mtg - WG1 Report 16/09/2020 11Activities for 2021
Possibility of sending students to IHEP and HK with the FEST program for software
development and detector requirement studies depending on the COVID-19 situation
—> Several sections involved (BA,BO,FE,LE,LNF, MI,PI,PV,TO)
Continue Delphes development with features necessary to its use for performance
studies (P. Azzi-PD, S. Braibant-BO, M. Selvaggi-CERN)
Porting GEANT4 standalone full simulation of IDEA complete detector in DD4HEP
and validation (L. Pezzotti-PV, S. Lo Meo-BO, P. Azzi-PD, N. De Filippis-BA, G.
Tassielli-LE)
CERN hiring more fellows for new software development Key4HEP
Stronger collaboration with SouthKorea and Sussex on Dual Readout
Calorimeter software needs
Continue work on object/event reconstruction and begin new « case studies »:
i.e. in DRCalo tau shower reconstruction using DNN (S. Giagu-Roma1, L.
Pezzotti-PV)
start of new case studies analyses for detector requirement definition (P. Azzi-
PD, P. Azzurri-PI, G. Panizzo-UD, L. Pezzotti-PV, etc)
RD-FA Referee Mtg - WG1 Report 16/09/2020 12European Funding Applications & Publications
AIDAinnova proposal submitted. Results known in October. (likely
to be funded and start in February/Mars 2021). It includes key4hep
and several IDEA detector and software developments. IDEA the
project with the biggest funding with more than 500Keuro. (P.
Giacomelli BO+CERN+DESY+etc).
Experimental MSCA ITN « SPIRAL-NET » for performance studies
and detector requirements at lepton colliders(SPIRAL-NET)
unfortunately rejected (as all the HEP projects). Will be resubmitted
now that Strategy is out. (P. Azzi PD+8 European Institutes+CERN,
DESY, KEK)
Preparation of a special issue of EPJ+ review article in
collaboration with Nature/Springer: « The next big leap ».
Several INFN people responsible for sections both for physics and
detector challenges.
RD-FA Referee Mtg - WG1 Report 16/09/2020 13Conclusions
Software and physics activities for RD-FA are very complex
and delicate topic. COVID-19 had in impact on some of the
planned activities involving travel. Nonetheless continued
progress both on the simulation development and
benchmark studies.
For the future:
Growing internal and international collaboration to
increase with European/International grants (barring
COVID19)
Expanding simulation and reconstruction work to be
applied to concrete benchmark cases for detector
requirement. Nicely connected to R&D studies as well.
RD-FA Referee Mtg - WG1 Report 16/09/2020 14You can also read
