EURO n Beta Beams Kick-off meeting 05-02-08

05/02/08EUROnu, Elena Wildner, CERN,

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EUROBeta BeamsKick-off meeting

Elena Wildner, CERN


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Outline

FP6 baseline Some important issues

FP7 Contributions from participants

Timeline Deliverables Milestones


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Outline





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.

Neutrino Source

Decay Ring

Ion production ISOL target &

Ion source

Proton Driver

Decay ring

B = 1500 Tm B = ~6 T C = ~6900 m Lss= ~2500 m

6He: = 100 18Ne: = 100

SPS

Acceleration to medium energy

RCS, 1.5 GeV

PS

Acceleration to final energy

PS & SPS

Beam to experiment

Ion acceleration Linac

Beam preparation ECR

pulsed

Ion production Acceleration Neutrino source

Detector in the Frejus tunnel

Existing!!!

8.7 GeV

93 GeV

Beta Beam Baseline Scenario

FP6 – Accelerator Chain Beta Beam baseline parameters A. Fabich, E. Wildner / CERN RCS preliminary design – A. Lachaize, A. Tkatchenko /

CNRS/IN2P3/IPN Orsay Decay ring preliminary design - A. Chancé and J. Payet /

CEA/DSM/DAPNIA Preliminary study of the collimation and absorbers in the

Decay Ring – E. Wildner, A. Fabich, M. Stockner / CERN Assymetric bunch merging in the Decay Ring – S. Hancock,

M. Benedikt / CERN PS activation and collimation studies M. Kirk, P. Spiller, J.

Stadlmann, C. Omet / GSI Darmstadt Decay losses along the accelerator chain of the beta beam

A. Fabich, M. Benedikt / CERN

FP6 – Production Production of 6He and 18Ne for EURISOL DS - T. Stora and EURISOL

task 3 participants / CERN + CEA Saclay 6He from a BeO target surrounding a n converter – optimization N. Thiollière

and coworkers CEA Saclay 18Ne from a MgO target - Factor 5 below requirements

Direct production, alternative production methods – M. Loiselet S. Mitrofanov / UCL Laboratoire du Cyclotron 7Li (p,2p)6He 16O (3He,n) 18Ne – Interesting, large targets and intense 3He beams

Ionization and cooling ring - C. Rubbia, A. Ferrari, Y. Kadi, V. Vlachoudis et al. / CERN Novel ideas with new baseline isotopes 8Li and 8B A general concept - could be used beyond EURISOL and beta beams

Ionization and bunching - T. Lamy and T. Thuillier/ LPSC Grenoble 60 GHz ion source design – EURISOL task 9

An accumulation ring at low energy – A. Källberg M. Lindroos / MSL and CERN

EURISOL DS task 12:“Beta Beam aspect”D1 Design of low energy ring(s)

No Milestones and expected results of this task Months due achieved

D1 /M1.1 Final choice on baseline design 4 √

D1 /M2.1 Freeze in/out parameters 9 √

D1 /M2.2 First order optics design 18 √

D1 /M2.3 First design low energy ring(s) 45

D2 Ion acceleration scenarios in PS and SPS


D2 /M3.1 Freeze in/out parameters 9 √

D2 /M3.2 Identification of limitation 18 √

D2 /M3.3 Study of ion acceleration in PS and SPS and possible upgrade 45

D3 Design of decay ring


D3 /M4.1 Freeze input parameters 9 √

D3 /M4.2 First order optics design 18 √

D3 /M4.3 Decay ring design 45

D4 Conceptual design report for a beta beam facility

M. Benedikt and M. Lindroos


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Outline





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Ion production

6He (tungsten or liquid metal as neutron converter and BeO as target)

18Ne (spallation, direct on magnesium oxide) Short-fall of ions if classical methods used Proposal to produce other isotopes

Isotopes like 8Li and 8B better Higher Q -> higher energy neutrinos


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Ion acceleration

Linac Multiple charge state acceleration?

Accumulation in the PS of 20 RCS bunches PS2?

SPS, new 40 MHz and 200 MHz systems give 10 ns long bunches into the decay ring.


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Neutrino production

Decay ring 7000 m 36 % straight sections, 5T superconducting magnets (6He up to =150)

Stacking (dilated life-time) by assymetric merging Do we need it? If we can relax on the dutyfactor we can fill

the complete Decay Ring and we can use a ”barrier bucket filling scheme” (ref. FNAL anti-protons)

Collimation and absorption of decayed ions


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Outline





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New ions: Production Ring (CERN) Gas target or liquid metal film target?

Supersonic gas target Argonne National lab. liquid metal film target?

FFAG or ”classical” ring lattice

Production Ring

“Beam Cooling with ionisation losses”C. Rubbia, A. Ferrari, Y. Kadi, V. Vlachoudis


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ECR (LPSC, GHMFL)

60 GHz ECR for bunching studies 6He and 18Ne contunued for reach of high efficiencies.

Study and first tests on bunching 8Li and 8B

Ion source technology (magnetic structures)


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Collection Device ( UCL, INFN) Prototype of production ring collection device

extraction efficiency of 8Li measured 8B extraction tested on-line

Release efficiencies

Production cross sections (theory & experiment)


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Decay Ring ( CERN, CEA) New baseline scenario for new beta emmitters

Superconducting Dipoles

Magnet Protection

Collimation

Revise stacking process


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Decay Ring, stacking ( CERN)

Stacking (dilated life-time) by assymetric merging. If we can relax on the dutyfactor we can fill the complete

Decay Ring and we can use a ”barrier bucket filling scheme” (ref. FNAL anti-protons)”

He

Ne


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Other contributions Supersonic Gas injector (PPPL)

Alternative ION collection devices (ANL)

Beam tracking code ACCIM (TRIUMF)

Analysis and theoretical work on results at LPSC (The institute of Applied Physics in Nizhny Novgorod)

Princeton Plasma Physics LaboratoryLaboratoire de Physique Subatomique et de Cosmologie de Grenoble


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Outline





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FP7


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Staff effort


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Kick-off FP7 WP4 beta beams

A kick-off meeting will be organized in spring 2008

Thanks to: P.Delahaye M.Lindroos A.Fabich and M.Benedikt!

EURO n Beta Beams Kick-off meeting 05-02-08

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