physics and performance evaluation group: status and plans ids-nf plenary meeting ral, united...

Physics and PerformancePhysics and PerformanceEvaluation Group: Status and plansEvaluation Group: Status and plans

IDS-NF Plenary meetingIDS-NF Plenary meetingRAL, United KingdomRAL, United Kingdom

January 17, 2008January 17, 2008

Walter WinterWalter WinterUniversität WürzburgUniversität Würzburg

(somewhat biased view) on behalf of the executive committee:(somewhat biased view) on behalf of the executive committee:Andrea Donini, Patrick Huber, Silvia Pascoli, Walter Winter, Andrea Donini, Patrick Huber, Silvia Pascoli, Walter Winter,

Osamu YasudaOsamu Yasuda

January 17, 2008 IDS-NF@RAL - PPEG 2

ContentsContents

PPEG mandatePPEG mandate Status and IDS baselineStatus and IDS baseline Test of alternative setups: Test of alternative setups:

The PPEG‘s playgroundThe PPEG‘s playground Comparison to competitorsComparison to competitors Website, EuroWebsite, Eurousus PlansPlans


IDS Physics and Performance IDS Physics and Performance Evaluation Group (PPEG)Evaluation Group (PPEG)

… … will continue the activities of the ISS physics working group. will continue the activities of the ISS physics working group. First phase: focus on the performance of the various neutrino First phase: focus on the performance of the various neutrino

facilities. facilities. At a later stage: focus shifted towards the physics case for a At a later stage: focus shifted towards the physics case for a neutrino factory neutrino factory

Executive committee: Andrea Donini, Patrick Huber, Silvia Executive committee: Andrea Donini, Patrick Huber, Silvia Pascoli, Walter Winter, Osamu YasudaPascoli, Walter Winter, Osamu Yasuda

Tasks: Tasks: – Coordinate physics performance studyCoordinate physics performance study– WebsiteWebsite– Interface with accelerator and detector WGInterface with accelerator and detector WG– (possibly) Workshops(possibly) Workshops– ReportReport


From ISS to IDSFrom ISS to IDS

ISS physics

Theory

Phenomenology

Experimental

Muon physics

IDS PPEG

TIM

E

Optimization/parameters for

standardphysics

Concise physics case

REPORT

Additions forNS physics/

requirementsfor muon

experiments

Here?


Why need another physics WG?Why need another physics WG?

Baseline design has to be evaluated and further Baseline design has to be evaluated and further developed in discussion with other WGsdeveloped in discussion with other WGs

Evaluation of new ideas, especially for large Evaluation of new ideas, especially for large 1313,,such as NF+SB, NF-SB, off-axis NF, etc.such as NF+SB, NF-SB, off-axis NF, etc.

Comparison to alternatives: beta beams etc.Comparison to alternatives: beta beams etc. Define requirements for non-standard physics Define requirements for non-standard physics

measurements, e.g., silver channel, etc.measurements, e.g., silver channel, etc. Include requirements for muon physics and how Include requirements for muon physics and how

these interact with the oscillation programthese interact with the oscillation program ……

Physics performance

evaluation (initial phase)


Physics performance evaluationPhysics performance evaluation Main purpose of the PPEG:Main purpose of the PPEG:

Evaluate the physics performance of a given experimental Evaluate the physics performance of a given experimental setup (neutrino factory or other, existing or planned) in a setup (neutrino factory or other, existing or planned) in a transparent, consistent and documented fashion.transparent, consistent and documented fashion.

TransparentTransparent: Clearly state: Clearly state– Definition of performance indicatorDefinition of performance indicator– Approximations usedApproximations used– Chosen input parameters, luminosity etc.Chosen input parameters, luminosity etc.– Confidence levelConfidence level– Treatment of systematicsTreatment of systematics

ConsistentConsistent: Assumptions should be on equal footing: Assumptions should be on equal footing DocumentedDocumented: Relevant information will be archived and : Relevant information will be archived and

will be accessible. Use of a website.will be accessible. Use of a website.


Definition of parametersDefinition of parameters Neutrino factory setup: all the parameters are defined in Neutrino factory setup: all the parameters are defined in

strict collaboration with the detector and accelerator WG strict collaboration with the detector and accelerator WG of the IDSof the IDS Need of a defined and efficient communication Need of a defined and efficient communication

between the various WGs (steering group?)between the various WGs (steering group?) There will be different types of setups:There will be different types of setups:

Baseline setup: stable, agreed designBaseline setup: stable, agreed design Conservative modification of 1. – e.g. different baseline etc.Conservative modification of 1. – e.g. different baseline etc.) Speculative ideas, e.g. new ideas) Speculative ideas, e.g. new ideas

Beta beam setups: possibly follow a similar procedure as Beta beam setups: possibly follow a similar procedure as for neutrino factory, working in collaboration with beta-for neutrino factory, working in collaboration with beta-beam groups; yet undefined!beam groups; yet undefined!

Super-beam setups: use of existing literature and input of Super-beam setups: use of existing literature and input of well-established and recognized expertswell-established and recognized experts


StatusStatus First version of baseline setup evaluatedFirst version of baseline setup evaluated First version of webpage onlineFirst version of webpage online Start of discussion of requirements for non-Start of discussion of requirements for non-

standard physicsstandard physics Keep track of new developments, such as Keep track of new developments, such as

low-E neutrino factorylow-E neutrino factory Keep track of „competitors“, e.g., Keep track of „competitors“, e.g.,

achievable beta beam luminositiesachievable beta beam luminosities


IDS baseline setupIDS baseline setup

IDS baseline 0.10IDS baseline 0.10evaluated!evaluated!

?

P. Huber(plenary)


IDS baseline: LuminosityIDS baseline: Luminosity Luminosity ~ Luminosity ~

Useful muon Useful muon decays x decays x detector mass x detector mass x running timerunning time

Luminosity critical Luminosity critical forfor– Physics potentialPhysics potential– OptimizationOptimization

Accelerator

Detector(s)


IDS baseline: other critical parametersIDS baseline: other critical parameters

Detection efficiencyDetection efficiencyversus backgrounds:versus backgrounds:Is it better to have smaller Is it better to have smaller BGs (small BGs (small 1313?) or higher ?) or higher

efficiencies (large efficiencies (large 1313?)?)

How small can the How small can the threshold be?threshold be?

Impact of systematics?Impact of systematics?


IDS baseline iteration procedure?IDS baseline iteration procedure?… from the PPEG point of view… from the PPEG point of view

Avoid quick changes; changes should be adiabaticAvoid quick changes; changes should be adiabatic Change request from working group as a wholeChange request from working group as a whole Twice-a-year (?) review of baseline setup by Twice-a-year (?) review of baseline setup by

steering group?steering group? Each change with significant impact on physics Each change with significant impact on physics

potential has to be justifiedpotential has to be justified Session in plenary meeting devoted to discussing Session in plenary meeting devoted to discussing

changes of baseline?changes of baseline? Specific responsible persons from each WG?Specific responsible persons from each WG?


//-setups: The PPEG‘s -setups: The PPEG‘s playground?playground?

PPEG needs some mechanism to evaluate and PPEG needs some mechanism to evaluate and compare tocompare to– Modifications/the optimization of the IDS baseline Modifications/the optimization of the IDS baseline

from the physics point of viewfrom the physics point of view– New developments (such as low-E neutrino factory)New developments (such as low-E neutrino factory)– CompetitorsCompetitors

Here: Here: -setups for modifications (such as different -setups for modifications (such as different baseline), baseline), -setups for new developments-setups for new developments

The mechanism how to choose competitor setups The mechanism how to choose competitor setups (superbeams, beta beams) needs some refinement, (superbeams, beta beams) needs some refinement, possibly in collaboration with Europossibly in collaboration with Eurousus


Example (Example (): Choice of std. baselines?): Choice of std. baselines? All regions:All regions:

Sensitivity for Sensitivity for sinsin22221313>10>10-4.2-4.2 (5 (5) ) for the shown for the shown performance performance indicatorindicator

Compared to IDS Compared to IDS baseline: ~ factor 2 baseline: ~ factor 2 higher luminosity, higher luminosity, EE =50 GeV =50 GeV

Robust optimum for Robust optimum for ~ 4000 + 7500 km~ 4000 + 7500 km(not <= 3000 km!) (not <= 3000 km!)

(Kopp, Ota, Winter, in prep.)

How does that looklike for IDS baseline?


Example (Example (): Minimum E): Minimum E for NSI? for NSI?

Higher muon energy helps; low-E NF not an optionHigher muon energy helps; low-E NF not an option Silver channel: Not relevant for IDS baseline; helps for ESilver channel: Not relevant for IDS baseline; helps for E ~ 50 GeV ~ 50 GeV

IDS

baseline?

High-E

NF

IDS

baseline?

High-E

NF

(Kopp, Ota, Winter, in prep.)


Example (Example (): Low-energy NF): Low-energy NFBASIC: (5 years) (3 1020 useful decays/yr) (2 signs) (20Kt fid. Mass) = 31022 Kt-decays (2 signs)

BETTER: (10 years) (5 1020 useful decays/yr) (2 signs) (20Kt fid. Mass) = 11023 Kt-decays (2 signs)

Red (no backgrounds)Red (no backgrounds)– Dotted - 1 X 10Dotted - 1 X 102323 KT-years KT-years

– Solid – 3 X 10Solid – 3 X 102222 KT-years KT-years Black (Background @ 10Black (Background @ 10-3-3))

– Short dash - 1 X 10Short dash - 1 X 102323 KT-years KT-years

– Long dash – 3 X 10Long dash – 3 X 102222 KT-years KT-years

Talk by Alan Bross

E ~ 4 GeV

Excellentthreshold!


Comparison to Comparison to „competitors“: Superbeams„competitors“: Superbeams

Superbeam upgrades could Superbeam upgrades could compete with neutrino factory compete with neutrino factory for large for large 1313

For large For large 1313, CP violation is , CP violation is

the only relevant matter!the only relevant matter! But, Huber: Super-beams are But, Huber: Super-beams are

„super“ not only because of „super“ not only because of the target power, detector the target power, detector mass etc., but also because of mass etc., but also because of the price!the price!

Talk byP. Huber

18

Beta beams: Luminosity?Beta beams: Luminosity? ISOL method at 1-2 GeV (200 kW)ISOL method at 1-2 GeV (200 kW)

– >1 10>1 101313 66He per secondHe per second– <8 10<8 101111 1818Ne per secondNe per second– 88Li and Li and 88B not studiedB not studied– Studied within EURISOLStudied within EURISOL

Direct productionDirect production– >1 10>1 101313 (?) (?) 66He per secondHe per second– 1 101 101313 1818Ne per secondNe per second– 88Li and Li and 88B not studiedB not studied– Studied at LLN, Soreq, WI and GANILStudied at LLN, Soreq, WI and GANIL

Production ringProduction ring– 10101414 (?) (?) 88Li Li – >10>101313 (?) (?) 88BB– 66He and He and 1818Ne not studiedNe not studied– Will be studied in the futureWill be studied in the future

RAL January 2008 The beta-beam task, EURISOLBeta-beam

requirements, 18

1 GeV p

p n

2 3 8

U

2 0 1

F r + spallation

1 1

L i X + +

fragmentation

1 4 3

C s Y + +

fissionTalk by

M. Lindroos

Factor of 10beyond current

std. luminosities?


Higher Higher beta beta beamsbeams

~ 350 CERN ~ 350 CERN implementationimplementationwith two baselineswith two baselines

5º 0, 90, -90º

7000kmInverted Hierarchy

7000kmNormal Hierarchy

2000km + 7000km

“Nominal” 2·1018 decays/year“Medium” 5·1018 decays/year“Ultimate” 10·1018 decays/year

Peak of spectrum ~matter resonance E

E. Fernandez-Martinez


Systematics task force?Systematics task force? Knowledge on crossKnowledge on cross

sections better for high sections better for high than low neutrino than low neutrino energiesenergies

Important issue especially Important issue especially for superbeamsfor superbeams

How does that look like How does that look like for a neutrino factory?for a neutrino factory?What SG/BG What SG/BG uncertainties do we uncertainties do we expect?expect? From P. Huber‘s talk

Talk by M. Sorel


PPEG WebsitePPEG Website

The PPEG has already The PPEG has already setup a website:setup a website:http://www.ippp.dur.ac.uk/ids/http://www.ippp.dur.ac.uk/ids/

Webpage to do:Webpage to do:– Incorporate and document IDS baseline;Incorporate and document IDS baseline;

possibly: glb-files (GLoBES), curves as data?possibly: glb-files (GLoBES), curves as data?– Discuss and document Discuss and document and and setups setups– Cross-links to useful documents?Cross-links to useful documents?– Move together with main IDS site???Move together with main IDS site???


Connection Connection to Euroto Eurousus

A. Donini


Questions to be addressedQuestions to be addressed Robustness of conclusions wrt luminosity etc.?Robustness of conclusions wrt luminosity etc.? Does the far baseline detector have to be as good as Does the far baseline detector have to be as good as

MIND? What about the luminosity splitting?MIND? What about the luminosity splitting? Why did the performance become worse for large Why did the performance become worse for large 1313? ?

How to fix that?How to fix that? Two baseline optimization?Two baseline optimization? Minimum muon energy for NSI, silver channel, near Minimum muon energy for NSI, silver channel, near

detector physics (such as pol. structure functions)?detector physics (such as pol. structure functions)? Physics case for silver detector?Physics case for silver detector? Large Large 1313 strategy: how to deal with Double Chooz etc.? strategy: how to deal with Double Chooz etc.? Include more theory people to support physics case?Include more theory people to support physics case?


Plans until NuFactPlans until NuFact Update websiteUpdate website Two-baseline optimization, NSI requirementsTwo-baseline optimization, NSI requirements Check baseline: performance for large Check baseline: performance for large 1313, etc., etc. Possibly add figures for other performance Possibly add figures for other performance

indicators (such as indicators (such as 2323, , mm313122))

Follow developments for beta beams, superbeams, Follow developments for beta beams, superbeams, etc.etc.

Possibly provide figures for different detector Possibly provide figures for different detector systematics (BG versus threshold)systematics (BG versus threshold)

Possibly provide figures with competitor Possibly provide figures with competitor comparisoncomparison


Summary and conclusionsSummary and conclusions Mandate: Continutation of ISS, focus on physics Mandate: Continutation of ISS, focus on physics

performanceperformance First version of ISS baseline evaluatedFirst version of ISS baseline evaluated Baseline optimization, muon energy requirement Baseline optimization, muon energy requirement

have to be checkedhave to be checked Several procedure/strategies should be thought Several procedure/strategies should be thought

over:over:– Baseline iteration (with other WGs)Baseline iteration (with other WGs)– Large Large 1313 strategy strategy– Physics case for the ECCPhysics case for the ECC– Selection of competitor setupsSelection of competitor setups– Inclusion of theory at earlier stage?Inclusion of theory at earlier stage?– Create a „systematics task force“?Create a „systematics task force“?

How does that relateto Eurou?

physics and performance evaluation group: status and plans ids-nf plenary meeting ral, united...

Documents

physics wg

ral ppeg3 ids physics

ids neutrino factory

ns physics requirements

non standard physics

ids baseline status

axis nf

version of baseline