ild concept and european status of ilc

Roman Pöschl

ILD Concept and European Status of ILC

ILC Tokusui Workshop – December 2015

2Roman Pöschl ILC Tokusui – December 2015

Detector concepts today – Personal view

Theory input Detector R&D

Detector concept

- Structured approach to validate physics potential of Linear Collider

Realistic perspectives On LC physics potential

Definition of R&D goalsDevelopment ofmodels in phasewith experimentalcapabilities


LC Detector requirements

Track momentum: σ1/p < 5 x 10-5/GeV (1/10 x LEP) ( e.g. Measurement of Z boson mass in Higgs Recoil) Impact parameter: σd0 < [5 ⊕ 10/(p[GeV]sin3/2θ)] μm(1/3 x SLD) (Quark tagging c/b) Jet energy resolution : dE/E = 0.3/(E(GeV))1/2 (1/2 x LEP) (W/Z masses with jets)

Hermeticity : θmin = 5 mrad (for events with missing energy e.g. SUSY)

Final state will comprise events with a largenumber of charged tracks and jets(6+)

• High granularity• Excellent momentum measurement• High separation power for particles

● Particle Flow Detectors


LC Detector concepts

SiD ILD

Highly granular calorimeters Central tracking Central tracking with silicon with TPC Inner tracking with silicon

Concepts based on input from physics studies and detector R&D organised in R&D collaborations

CLIC Detector


ILD Detector 6


ILD History

2007: Call for Letters of Intent of detector concepts in the course of the structuring of the ILC project Formation of ILD from LDC (mainly European) and GLD (mainly Asian) concepts

2009: Publication of ILD LOI Validation by IDAG with the invitation to move forward to a Detailed Baseline Design (DBD)

2013: Publication of DBD together with SiD DBD and the ILC Technical Design Report

Since autumn 2013:

In the frame of the LCC slow but steady move from a concept group to a collaboration


ILD Structure I – General Overview

68 InstitutesChaired by Jan Timmermans NIKHEF

Positions are about to be filled from top to bottom


ILD Structure II – Top level positions

Spokesperson: Ties Behnke (DESY)Deputy: Kiyotomo Kawagoe (Kyushu)

1.Henri Videau (LLR)2. to be elected3. to be elected4. to be elected

Frank Gaede(DESY)

Keisuke Fujii(KEK)

Elected management members, so far

Expect to have complete management team in place by Spring 2016


ILD at work I

Areas of interest expressed by ILD Member Institutes

Detector Common task Physics Analysis

- Result of survey in Summer 2015- All areas would be covered- However (nearly) nowhere dedicated funding for ILD matters


ILD at work II

What ILD will/can provide in the coming ~two years:

- Update of software tools for detector optimisation beyond the DBD status - Cost optimisation but also testing/pushing the limits of the detectors Central event 2015: A high level reconstruction week at DESY Next ILD software workshop: 22-26 Feb. 2016 at DESY

- Establish the communication between different sub-detectors in view of a project=> The detector construction requires well defined interfaces between sub-detectorsand between the machine and ILD

Important event: ILD Integration workshop at LAL

What ILD will not (yet) provide in the coming ~two years

- Organisation of the actual detector R&D Still close and regular communication between R&D projects and ILD


Software tools – An overview

Framework: ILCSoft Mokka -> DD4HEP (Common HEP toolkit, AIDA[2020] -> later) Marlin processors for event processing Organisation of data processing within vo ilc

Reconstruction algorithms

LCFIPlus

CluPaTraForward TrackingSiTrackingFullLDCTrackingConformalTrackingExtrapolateCASeed

Various Leptonfinders Particle flow mainly within

Pandora toolkit

- Calorimeter clusterisation- Separation of charged and neutral particles- Output are Particle Flow Objects, i.e. Individual Particles

- Alternative is ARBOR

+vertexingJet algorithms:- Mainly Durham but also anti-kt


Pandora Performance

S. Green, LCWS15

3

5

15-20% improvement on Jet Energy resolution with updated PandoraPFA


Role of AHCAL Cell size?

Hot topic in 2015

3

5

Optimisation of AHCAL Truncation <=> Optimisation of software compensation

- Shallow residual on dependency on HCAL cell size - Further improvement by software compensation a la CALICE

Morality: Software compensation in AHCAL is essential for PFA results

3

4

4


Inner Ecal radius

Smaller inner Ecal radius => Cost reduction Where is the optimal compromise between cost and performance

Jet Energy resolution Core Higgs measurements

σ_resoluton : ~10%σ

zh precision: < 5%

Mh precision: ~12%

Degradaton (R:1.8 m 1.4m)

26% more dataneeded to recovernominal precision

- Small effect until 1400mm- Leaving save range R~1400mm

Need to have:- Proper set of parameters but also appropriate benchmarks- A good crystal bowl (What we decide “now” may be with us until ~2050)- Personal remark: A bit of overdesigning would make sense


(Towards) Full Exploitation of the ILD Potential

Answering these questions may/should lead to a qualitative jump of ILD performance... and would set ultimate goals for detector R&D- Requires an excellent understanding of the interplay of sub-detectors (and algorithms)


(Towards) Full Exploitation of the ILD Potential

• Leptonic recoil - J. Yan (KEK) full investgatons at 250, 350 and 500 GeV, lef right beam polarisatons, model independence• Self-coupling - M. Kurata (Tokyo U’) combined HH—>bbbb (by C.Duerig) and HH—>bbWW*, improvement from kinematc ftng• Top-Yukawa coupling - Y. Sudo (Kyoshu U’) improved isolated lepton (w/ tau) fnder, new jet pairing, new high stat 6f• Anomalous HVV coupling - T. Ogawa (KEK & Sokendai) full investgaton of HZZ coupling, signifcantly higher sensitvity than

snowmass study (by theorist)• Higgs mass using H—>bb - A. Ebrahimi (DESY) new study, has big impact on running plan at 250 GeV• BR of H—>μμ - M. Faucci (RHUL) revisit (previously by C.Calancha), employ latest rec/ana algorithm

HIGGS

• Stau co-annihilaton at LHC & ILC - M. Berggren (DESY) joint study of STC model with colleagues from CMS, arXiv: 1508.04383• SUSY mass meas. from kinematc edge - M.Chera (DESY) update of Point5 study with focus on advanced methods to determine

the edge positons / masses (fnite response flters, calibraton etc)• Monophoton WIMP search - T. Tanabe (Tokyo U’) update of LoI-tme study by C.Bartels, in partcular impact of Bhabha veto efciency (new BeamCal reconstructon), photon reco (newest Pandora), impact of beam spectrum, improved ISR treatment etc

BSM

• Modelling of γγ—>low-pt hadrons - S. Sasikumar (DESY) generator- and detector-level study SM/Systematcs

• Tau reconstructon - D. Jeans (Tokyo U’) new novel algorithm using impact parameter, to be used in Higgs CPReconstructon

• Electroweak top couplings - Experimental Status - R. Poeschl (LAL) • Measurements of top-couplings using full leptonic fnal states - R. Le Diberder (CNRS/IN2P3/LAL)• Top Threshold – Experimental status – F.Simon (Max-Plank-Insttut fuer Physik)

TOP


Low momentum particles

Mass degenerated Higgsino scenario implies soft forward particles ...

... that can be reconstructed with high efficiency and purity


Vertex I - Taus

Using impact parameters to fully reconstruct hadronic tau decaysILC detectors will have excellent impact parameter resolution

- can we use this to fully reconstruct taus?→ reconstruct neutrino momentum

π-

τ-

ν

PCAMomentum

@ PCA

IP+

h0

V(almost linear) measured π- trajectory

measuredmomentum

unknown

unknown

charged prong trajectorydefines tau decay plane

tau mass and global pT

constraints can fully determineneutrino momentum

Tested on fully ILD-simulated ZH → (mu mu) (tau tau) events

Works significantly better than collinear approxdepends on excellent precision of

IP and impact parameter measurements

arXiv:1507.01700

http://arXiv.org/abs/arXiv:1507.01700


Vertex charge I

Precise reconstruction of θtop

in case of right handed electron beams

Ambiguities in case of left handed electron beamsDue to V-A structure at ttX vertex

Remedy to address ambiguities: Select cleanly reconstructed events by χ2 analysis or Reconstruction of b quark charge

- To correctly recostruct b-quark charge Full track information is needed

- This is in contrast to e.g. flavor tagging or vertex finding itself where only a selection of tracks is needed.


Vertex charge II

Using information from LCFIPlus vertices- Biased by PFO composition and vertex finding

To do: Base track recovery on tracking objects Better reconstruction of vertex hits (Mini-vectors) Use updated LCFIPlus where more tracks are employed for vertexing Check forward tracking If “all” tracks are on diagonal -> Exploit tertiary vertices for neutral B-Mesons

Using information from LCFIPlus verticesand additional PFO objects

Assignment of tracks to secondary and tertiary vertices correctly assigned to


MDI Issues

Regular MDI Meetings:

- Discuss detector assembly- Get a consistent planning together with CFS and machine

- Structured approach by interface control document- Need to make maximal use of limited time of highly skilled engineers

For details: See MDI sessionyesterday

Identify topics which are common to ILD and/or where ILD as a whole is concerned


Summary ILD

- ILD is moving towards a fully organised collaboration Full management about to be put in place Lightweight procedure to join ILD

- New management should strengthen communication within ILD i.e. to arrive at common interfaces for e.g. detector integration

- ILD provides central and well developed tools for detailed simulation studies Based on communication with machine, theory groups and detector R&D groups => Decisive contribution to credibility of LC perspectives on precision and discoveries

- ILD assures communication to “partners” of ILC project SiD Machine and conventional facilities => Decisive to be ready for the green light

- ILD is not (yet) considered as a project=> Difficult to secure finding for ILD exclusive studies, depends on good will of lab directors Always “threatened” by other projects


Situation in Europe

- Continuous R&D on LC in many countries all over Europe since more than 20 years Accelerator and Detector

- Leading labs: DESY (ILC), CERN (CLIC)

- Effort has survived already two major crises - Turn down of TESLA in 2003 - “Black december” 2007

- Still support is very much reduced since about 2010 - Often maintained under generic R&D

- LC Activities monitored by ECFA LC represented by Juan Fuster

- Effort would benefit from clear and agreed milestones in near future

+Israel


European XFEL

Largest deployment ofthis technology to date● 100 cryomodules● 800 cavites● 17.5 GeV

The ultimate ‘integratedsystems test’ for ILC.

Commissioning ongoing

~25 MV/m


European Strategy – Reminder and Comments

- Highest priority to full exploitation of LHC - Funding for upgrades is about to be secured in the various European Countries

- CERN has to prepare for a project at the energy frontier after the LHC - CLIC is part of these possible projects - Foundation of the FCC project Ultimate goal is 100 TeV hadron collider Electron-positron machine sails in the wakefield of the hadron collider Projects initiated/promoted by CERN naturally attract attention in Europe but e.g. FCC-ee community is small Chinese project not (yet) on the agenda of European considerations, at the level of Individual contacts - Europe has acknowledged the utmost scientific value of the ILC and is looking forward to a proposal from Japan - Difficulties to secure funding for LHC but also for local projects (FAIR, ESS, Spiral2) “prevent” currently a more active role of Europe - Many investments as e.g. for XFEL are part of the strategy towards ILC


“Funding” Highlights 2015 I - AIDA2020

Project within the EU programme HORIZONS2020

Federation of leading institutes in detector R&Dfrom 24 countries and CERN

Funding of 10 Meuros for four yearsApproved on 15/1/15, Start on 1/5/15

- Current scientific coordinator: Laurent Serin LAL- Next scientific coordinator (1/5/16): Felix Sefkow (DESY)- Many “LC members” are in leading positions - LC is recognised as related project


AIDA2020

About 20-25% of AIDA-2020 money for LC


AIDA2020 - DD4HEP

- DD4HEP was “born” in AIDA and will be further developed in AIDA2020 For ILC and other HEP-Experiments -> Direct benefit for ILD


E-JADE

- E-JADE Finances interaction between Japan and Europe on LC issues Main idea is to fund longer stays of European researchers in Japan

=> E-JADE provides travel money. e.g. Presence of R.P. Is funded through E-JADE

Project within European Programme H2020-MSCA-RISE-2014

Marie Sklodowska-Curie Research and Innovation Staff Exchange (RISE)


RANDALF

- RISE proposal for advanced detector technologies with focus on linear collider Detectors

- 18 Institutes: 13 European Institutes + 4 Japanese Institutes + 1 US Institute

- Total funding request: 1.9 MEuro for staff exchange

- Proposal submitted: 28/4/15

- Proposal (initially) rejected in September Main points of criticism: Not enough focus Not clear about future collaboration in case ILC will not be realised

- Will make another submission in Spring 2016 by taking critical remarks into account Seek for broad support within Europe

- Together with AIDA2020 RANDALF would found a solid basis to progress with detector and physics studies for the ILC and relax the tight funding situation


“Funding Highlights 2015” II - Germany

New round for BMBF (research ministry) funding :● 1.6 Meuros R&D for ILC detector (3 years, 6 universities)● 1.4 Meuros R&D for ILC machine (SCRF, e+ source)

- Can be qualified as a strengthening of the R&D funding that is related to (I)LC

- Though no official label (I)LC However e.g. job advertisements mention explicitly ILC

- Supported detector projects are analogue HCAL and TPC Note that to this funding, the funding for/at/by DESY and MPI has to be added

We should take it is a positive sign that the biggest economy in Europe dedicatesmoney to LC related R&D


Contacts on Political Level

... at the example of France

France-Japan contacts in 2015:

April 2015 : France representatves of the ILC community had discussion on ILC with:● Scientfc Advisor in French Embassy in Japan

● ready to informally discuss ILC with MEXT, if wish so expressed by Japan.● Informed French ministries of Foreign Afairs and of Research of our visit.

● Mr. Kosaka-san, head of a diet members delegaton visitng EU● personal contact established● follow-up in September : meetng with Council of Japan & JSPS, in Strasbourg

● French “diet member” who visited Japan in 2014● pleased to discuss ILC when a visit in Paris of Japan diet members is organized

October 2015 : Visit of Japanese delegaton (Nomura) CEA+IN2P3+Industries : Alsyom, Air Liquide, Aperam Nickel Alloys, Thales

End of 2015 : Annual meetng of France ILC community

Other visits have been made to Germany and UK as well.

Off-topic: Hot news France – Change of IN2P3 Director: Jacques Martino -> Reynald Pain


(Regular) Meetings in Europe

- Poland: January 2015, Epiphany Workshop at Cracow (Poland) on Future Colliders ... including a Round Table

- France: Regular “Journées Collisionneur Linéaire” Meeting of French Community (CEA/Irfu and IN2P3) with International guests/observers Typically 50-60 participants 4th issue 23/3/16 – 24/3/16 at Paris

- Germany: Regular meetings as “LC Forum” in the Frame of the Helmholtz Terascale Alliance Organisation of LC School at Frauenchiemsee/Bavaria

- Spain: Spanish Network on Future Linear Colliders organises 1-2 national meetings per year

- UK: (I think) there are regular meetings of UKLC community

- Italy: One of the great absents in European LC Activities but Italian theory community (lead by Giulia Panceri) keeps Contact, e.g. LC15 in Trento

- European Linear Collider Forum: Regular phone meetings (organised by DESY) before and after LCB meetings to keep community up to date


LC School 2016


IEEE NSS/MIC 2016

General Chair: Maxim Titov, ..., NSS Chair: Eckhard Elsen, ..., EU Liaison: Marc Winter

29/10/16 – 6/11/16

Clearly a great opportunity to present Linear Collider as one of the main drivers forprogress in instrumentation


CERN Strategy

Slide by CERN DG R.D. Heuer from last Plenary ECFA Meeting (19/11/15) at CERN


CERN – New Organisation Scheme

.. presented by new CERN DG Fabiola Gianotti

Eckhard Elsen


EU - Scientific Advice Mechanism

- Dismissal of EU Chief Science Advisor at the end of 2014

- European Commission seeks better founded advice on scientific decisions

- Consultance of EU on scientific decisions now assured by a panel of seven members one of which is Prof. Rolf-Dieter Heuer

- This panel is called by and reports to the Commissioner on Higher Education and Research


Summary

- ILC is part of the European Strategy New strategy in 2018 or 2019 depending on the LHC progress CLIC to be presented as one of the possible future CERN projects Expect FCC CDRs for this strategy

- European activities are largely dominated by LHC and its upgrades Securing funds for this is priority of European funding agencies

- Still solid community working for LC related issues Funding is uncertain with the notable exception of the recent German Grant LC activities constitute important fraction of e.g. AIDA2020 (but also E-JADE) Further consolidation is expected (hoped) from resubmission of RANDALF

- XFEL is important strategic project Institutes working on/for XFEL have big interest to capitalise on investments and know-how Know-how can vanish if ILC decision doesn't come timely

- Latest political developments (CERN Management, EU Advice Panel) at least not in disfavour of (I)LC

Backup ....


AIDA2020

WP1 NA1 Innovation and outreach : 538kEUR total, ~30-40kEUR for LC (Travel)*

WP3 NA2 Advanced Software : 920kEUR total, ~460kEUR LC related (Manpower)*

WP4 NA3 Microelectronics and interconnection : 987kEUR total, ~300kEUR LC related (Calo ASICs)*

WP5 NA4 Common integrated data acquisition : 475kEUR total, 475kEUR LC related (Manpower)*

WP6 NA5 Novel High voltage and resisitive CMOS sensors : ?, contains CLIC

WP7 NA6 Advanced Pixel detectors : ?, contains CLIC

WP8 NA8 Support structures and micro-channel cooling : ?, no explicit mentioning of LC

WP13 JRA1 Innovative gas detectors : ?, no explicit mentioning of LC (but Imad Laktineh coordinator)

WP14 JRA2 Advanced calorimeter infrastructure966kEUR total, 666kEUR LC calorimetry 155kEUR SiW Ecal, 73kEUR for LAL (Material)

WP15 JRA3 Improved infrastructure for test beam and irradiation facilities1116kUR, no explicit mentioning of LC but LC detectors will benefit from improved Infrastructure

Total LC: ~2236kEUR (out of 10MEUR) => One can say 20-25% of AIDA-2020 money for LC

*Estimation R.P.: Based on total funding and described work

ild concept and european status of ilc

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