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EURO . A High Intensity Neutrino Oscillation Facility in Europe. Introduction Superbeam Neutrino Factory Beta beams Detectors Physics Possible next steps. EUROnu. FP7 Design Study

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Euro
EURO

A High Intensity Neutrino Oscillation Facility in Europe

  • Introduction

  • Superbeam

  • Neutrino Factory

  • Beta beams

  • Detectors

  • Physics

  • Possible next steps


Euronu
EUROnu

  • FP7 Design Study

  • Due to limited funds: focus on possible “next” generation neutrino oscillation facilities in Europe

    • CERN to Frejus superbeam

    • Neutrino Factory (in collab. with IDS-NF)

    • Beta beams

  • + performance of baseline detectors and physics reach

  • Output: comparison of physics, “cost” & risk

  • Reported to CERN Council via SG/ECFA

  • Project started: 1st September 2008

  • Duration: 4 years – completion in August 2012




Euronu status
EUROnu Status

  • Baselines largely defined

  • Design work still continues

  • Moving more towards “engineering”

  • Costing:

    • WBS being done

    • Framework being created using cost tool

    • Workshop planned soon

  • Safety and risk also to be done

  • Midterm technical review taking place

  • 19 months left!


Super beam
Super-Beam

  • Design of CERN to Frejus SB based on SPL


Super beam1
Super-Beam

  • Design of CERN to Frejus SB based on SPL

  • Parameters:

    • 4MW beam: HP SPL

    • 5 GeV k.e. protons

    • 130Km baseline

  • Focus on solution for target + collector

  • Determine performance for Physics reach


Sb target
SB - Target

  • Preference: static solid target

  • Mercury jet – non-starter:

    • needs magnetic field containment

    • interaction with horn

    • not simple

  • Low Z and 4 targets: small extrapolation

  • Initial thoughts: 4*single graphite/beryllium target



Sb target2
SB - Target

Pebble-bed target


Sb horn
SB - Horn

  • Baseline:

  • Miniboone shape

  • Aluminium

  • Cooled with internal water jets

  • Pulsed with 300-350kA

  • Looks fine from stress and fatigue

  • Lifetime due to radiation needs study


Sb horn1
SB - Horn

Very preliminary


Neutrino factory
Neutrino Factory

  • Close collaboration with IDS-NF

  • IDR almost ready

Muon front-end

Muon acceleration


Nf pion capture
NF – Pion capture


Nf pion capture1
NF – Pion capture


Nf pion capture2
NF – Pion capture


Nf pion capture3
NF – Pion capture


Nf front end
NF – Front-end

Status: - advanced - awaiting MICE results - RF studies - alternatives under study


Nf acceleration

244 MeV

0.9 GeV

146 m

79 m

0.6 GeV/pass

3.6 GeV

264 m

2 GeV/pass

12.6 GeV

The linac consists of SC RF cavities and iron shielded SC solenoids grouped into three types of cryo-modules.

NF – Acceleration

LINAC

RLA I

RLA II

Chicanes have a vertical dipole spreader, horizontal bending magnets, quadrupoles for transverse focussing and a vertical dipole combiner.

The RLAs consist of single SC RF cavity cells and FODO quadrupole focussing throughout.


Nf acceleration1
NF – Acceleration

Non-scaling FFAG:

Conceptual design advanced.

Engineering being started.

But, no such machine ever built.

Commissioning underway.


Beta beam
Beta-Beam

  • Main issue in EUROnu: maximise ion production

  • 2 options being considered


Bb ion production

BB – Ion production

  • Production

    • ISOL method 18Ne 2x1013/s<8x1011/s6He 2x1013/s>1x1013/s

    • direct production being studied

  • Updated Beta Beam: 8Li and 8B – higher Q isotopes

  • ion production ring

8Li 1014/s

8B >1013/s


Bb ion production1
BB – Ion production

But: >5* more ions – difficult to accelerate 8B looks very difficult 18Ne looks possible, though experiment required


Bb ion production2
BB – Ion production

New baseline

Work continues to optimise ion production rate


Bb ion production3
BB – Ion production

Possible

Needs experiment

Challenging


Detectors

Detectors


Detectors mind

50-100 m

15 m

n beam

50-100kT

15 m

B=1 T

iron (3 cm)

+ scintillators (2cm)

  • Golden channel signature: “wrong-sign” muons

Detectors - MIND

IDS-NF baseline for 25 GeV NuFact: MIND

  • Far detector: 100 kton at 2000-4000 km

  • Magic detector: 50 kton at 7500 km

  • Appearance of “wrong-sign” muons

  • Segmentation: 3 cm Fe + 2 cm scintillator

  • 1 T magnetic field


Detectors mind1

Detectors - MIND

Numu efficiency

Anti-numu efficiency


Detectors wc

Detectors - WC

MEMPHYS

440 kt

65m

60m

EuroNu, RAL,

19 January 2011


Detectors wc1

Detectors - WC

MEMPHYS: interactive μ+500 MeV


Physics

  • Physics performance fiducial) but could be expanded to 3x65mx80m (572 kton)

  • Optimisation:

    • baselines and energies

    • synergies: experimental setups and facilities

  • Systematics

Physics


Next steps
Next Steps fiducial) but could be expanded to 3x65mx80m (572 kton)

  • Technical review: April/May

  • ECFA Neutrino Panel

    • Independent assessment

    • IDS-NF IDR

    • EUROnu annual report

  • CERN Strategy Review: kick-off this summer report next summer

  • EUROnu contribution under discussion

  • EUROnu future: also under discussion