Alain Blondel

-- After the ISS --

What did ISS achieve?

1. Established a « baseline » for the accelerator study2. Rejuvenated simulation and study of Neutrino Factory detectors, established « baselines »; connected detector technologies (NUFACT, superbeam and Beam) 3. Boosted the work on comparison between facilities on equal footing.4. addressed fundamental issues of experimental nature (matter effects, LE cross-sections, flux control etc.)

NB: caution about « baseline »: can be either -- choice on which further efforts, engineering, costing and R&D should concentrate -- ‘default assumption’ with respect to which new ideas can be compared (detectors) -- choice to be used in defining interfaces with other systems (accelerator)

Alain Blondel

NUFACT Accelerator baseline

proton driver parameter

Value

Energy (GeV) 10 ± 5

Beam power (MW) 4

Repetition rate (Hz) 50

No. of bunch trains 3,5a)

Bunch length, rms (ns) 2 ± 1

Beam durationb) (s) 40

a)Values ranging from 1–5 possibly acceptable.b)Maximum spill duration for liquid-metal target.

NuFact Parameter Value

Target+capture L Hg+ 20T

solenoid

phase rotation and bunching

cooling yes

stored muon energy upgradable to

20GeV40GeV

trains of both signs of muons separated by

100ns

decays per straightangular divergence

1021/yr0.1/

RF

Goals achieved!

Alain Blondel

NUFACT detectors baseline

distance detector 1

3000+-1000 km

distance detector 2

7500 +- 500 km

detector 1 largest MIND1)

(100 kton) 4cmFe/1cm scint res. 1cm+ ECC 5-10 kton (Silver)

detector 2 MIND (30 kton)

matter density uncertainty

+- 2%

effective muon selection threshold

~3 GeV (actual analysis to be used)

beyond the baseline to be investigated

large magnetic volume for Larg, TASD, MECC(Platinum)

1) Magnetized Iron Neutrino Detector

MIND

new selection

old selection

LAr

GAr

B≈ 0.11 T

LHe

HTc coil? HTc coil? hep-ph/0510131Frascati, 2005

Alain Blondel

Comparison: CP violationSPL

Systematics: 2% – 5%

T2HKSystematics: 2% – 5%

WBBSystematics from

proposal

Neutrino FactoryGolden, 4000, Eμ = 50 GeV

Golden* (4000 km), Golden* (7500 km)Eμ = 20 GeV

Beta beam= 100

500 kT H2O Ç (130 km)

= 350500 kT H2O Ç (730 km)

this minimal 3 family picture plots and similar plots within and beyond the minimal picturewill continue to be refined and clarified as progress is made by proponents of the various options

CHOICE will depend on

--

--cost --timescale

PREL

IMIN

ARY

Alain Blondel

EP2010:

« pursue an internationally coordinated, staged program in neutrino physics »

CERN-SG: Studies of the scientific case for future neutrino facilities and the R&D into associated technologies are required tobe in a position to define the optimal neutrino programmebased on the information available in around 2012; Council will play an active role in promoting a coordinated Europeanparticipation in a global neutrino programme.

Towards a high-intensity neutrino programme

Alain Blondel

2010 will be a time of major decisions in particle physics

•LHC will be completed first results will appear

•ILC GDE

•It is crucial that infrastructure needed for future neutrino expts be on the map

=> although 2012 is the eventual target date we should be sure to have interim reportsby 2010.

TARGET DATE I 2010

Barry Barish, CERN SPC sept05

ILC

Alain Blondel

1. a neutrino factory accelerator design study is really needed. This is also true of the beta beam and of the superbeam options

2. For each option, significant investment in hardware R&D and engineering design is required for a Conceptual Design Report (CDR) to be produced.

3. also needed is a performance/feasibility study of neutrino factory detectors and of non-magnetic detectors for superbeam and beta-beam

4. A more global physics group for comparison of options is highly desirable.

5. Keep the neutrino community coherent(role of NUFACT workshops!)

6. Strong transverse technological and scientific links between the various studies e.g. 4 MW proton driver and target area detector technologies and test beam area:…

27

Test Beam Facility for Neutrino Detector R&D

Request test beam in East Area at the CERN PS, with a fixed dipole magnet for dedicated Neutrino Detector R&D

Liquid Argon tests, beam telescopes for

silicon pixel and SciFi tests, calorimetry …

Neutrino detector test facility:community resource forneutrino detector R&D

Alain Blondel

ISS--> IDS aspirational time line:

ISS report: end of 2006 will include a description of the R&D and ressources necessary to produce InterimDesignReport in 2010 and CDR in 2012

Next « ISS »  meeting second half of february 2007 19-21 feb @ CERN

2006-2007 preparation of funding proposals

Review of where we stand at NUFACT07

mid-2008 (NUFACT08) funded engineering phase begins

2010 IDS interim report

2012 CDR

Meanwhile a European Oversight Committee should be put in place to coordinateneutrino-beam requests.

Alain Blondel

Regional Oversight Committees

Nufact study

Accelerator

Detectors

Physics

Betabeam study

Accelerator

Detectors

Physics

Superbeam study(or studies)

Accelerator

Detectors

Physics

Neutrino Oscillation Physics Working Group

-- exact structure of each study to be decided by proponents

-- Regional Oversight Committees will possibly converge to a single international committee for a future precision neutrino facility

Alain Blondel

Nufact study

Accelerator

Magneticdetectors

Physics

Betabeam study

Accelerator

Detectors

Physics

Superbeam study(or studies)

Accelerator

Detectors

Physics

NUFACT WORKSHOPS

1/yr

Neutrino Oscillation Physics Working Group