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Summary WG3. NuFact ’ 11. Elena Wildner, Makoto Yoshida and Alex Bogacz. Elena Wildner, Alex Bogacz and Makoto Yoshida. NuFact ’ 10 NuFact ’ 11. 1) Is Project X a suitable proton driver for the Neutrino Factory? Yes it is; A complete scheme emerged including stripping injection

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Summary wg3

Summary WG3

NuFact’11

Elena Wildner, Makoto Yoshida and Alex Bogacz

Elena Wildner, Alex Bogacz and Makoto Yoshida

Summary, WG3, NuFact 11, Geneva


Nufact 10 nufact 11

NuFact’10 NuFact’11

1) Is Project X a suitable proton driver for the Neutrino Factory?

Yes it is; A complete scheme emerged including stripping injection

2) What is the path for solving the problem of operating high gradient RF is strong magnetic field?

Ongoing, vigorous experimental program under way at MuCool and MTA at Fermi at LBNL (first experimental tests coming out)

3) Does energy deposition pose SC solenoid shielding problem for presently proposed proton drivers?

Challenging problem, robust engineering solution being worked out.

4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings?

Working concept under study, specific components being modeled and optimized.

5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG?

EMMA demonstrated device feasibility. Conceptual solution is being studied

2

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufact 10 nufact 111

NuFact’10 NuFact’11

6) Can Scaling FFAG be used in other-then-ring configurations?

Complete prototype lattices designed for new applications e.g. prototype decay ring for VLENF

7) Is there a synergetic path from the Neutrino Factory to MC?

A clear path emerged and being developed within MAP. Usage of components and techniques developed for NF-IDS.

8) Target handling for Multi MW targets ?

1 MW target handeling needs to be addressed

9) Proposed target systems are many, convergence?

Multiple designs required; different requirements for various applications

10) Material property evolution with time (from radiation, strain & stress and temperature)?

Appropriate material studies under way.

3

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufact 10 nufact 112

NuFact’10 NuFact’11

 11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

12) Verification of the 18Ne production for beta beams?

Tested experimentally.

13) Modeling of pion production complete?

Agreement between two models/codes (MARS and FLUKA) consistent within 10-20% with the HARP data

14) How serious is power deposition in the structures after/around the target (horn, solenoids…)?

 Quite significant. They are modelled accurately; adequate shielding provided

15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections)

VLENF conceptual design with large acceptance decay ring, Scaling FFAG option

4

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Euronu

EUROnu

Objective:

Compare

SuperBeam

Beta Beam

Neutrino Factory

Performance/Cost

CERN Stategy Group will get Result

Take Decision?

5

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufact workshop

Nufact (workshop)

Objective:

Work on and discuss

Neutrino physics

&

Facilities

This year: Panel Discussion with “management”

Result: we got back a number of questions from panel…

Answers from Acc. Phys., see later

6

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Super beam

Super Beam

7

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Super beam1

Super Beam

8

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Super beam2

Super Beam

9

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Beta beam

Beta Beam

10

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Euronu physics

EUROnu physics

T2K & Minos :

Theta13 large!!!


Neutrino factory

Neutrino Factory

Studied in EUROnu (Europe) and IDS (International)

IDS Report is out

12

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Proton driver

Garoby, Gollwitzer, Thomason

Proton driver:

IPAC10: THPD074,MOPEC049,WEPE098

  • Challenges:

    • High power; short proton-bunch lengthat ~10 GeV

  • IDS-NF approach:

    • Consider two ‘generic’ options:

      • LINAC:

        • Possible development option for SPL (CERN) or Project-X (FNAL)

        • Requires accumulator &compressor rings

      • Rings:

        • Development option for J-PARC or RAL or possible ‘green-field’ option

        • Requires bunch compression


Neutrino factory front end

Neutrino Factory Front End

700 MeV/c

  • Drift from target ~80m

    • Beam lengthens

  • Buncher (~33m)

    • N=10

    • P0=233MeV/c, PN=154MeV/c

    • 330 → 235 MHz

    • V’= 0→9 MV/m

  • Rotator (~42m)

    • N=10.05 –

      • accelerate/decelerate bunches

    • 235→ 202 MHz,V’= 12 MV/m

  • Cooler (~80m)

    • 201.25 MHz, ASOL lattice

    • 15MV/m in rf cavities

    • LiH or H2 cooling

  • Captures both μ+ andμ-

0m

-30m

30m

0 MeV/c

Drift - 80m

Δ=10λrf

Bunch-110m

v

Rotate-155m

Δ=10.05λrf

23 bunches

Cool-240m


The proposed lay out

The Proposed Lay-out

  • Re-use the old TT7 tunnel and cavern to house primary beam line and target station

  • Proton beam to be provide by CERN PS

Near detector

ACCELERATORS FOR THE PS NEUTRINO BEAM

Far detector

  • 150t liquid argon TPC near detector in or near building 181

  • 600t liquid argon TPC far detector in building 191

Rende Steerenberg, CERN Switzerland


Experimental requirements

Experimental Requirements

  • Request: 2.5x1020 protons over 2 years

    • Based on neutrino production yield of 1980’s

  • Proton beam momentum ~ 20 GeV/c

    • Secondary νμ andνμ beam with Eν ≤ 2 GeV

  • The challenge lies in:

    • producing this extra amount of protons from the CERN PS

    • designing the optimum and reliable target and focussing system

    • Respect radiation limits for this surface facility

ACCELERATORS FOR THE PS NEUTRINO BEAM

Rende Steerenberg, CERN Switzerland


Summary wg3

Rende Steerenberg, CERN Switzerland


Summary wg3

Rende Steerenberg, CERN Switzerland


Summary wg3

8) Target handling for Multi MW targets ?

Multi MW targets feasible; two robust designs exist (NF, LBNE)

Example for Frejus Superbeam:

21

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

8) Target handling for Multi MW targets ?

Multi MW targets feasible; two robust designs exist (NF, LBNE)

C. Densham

ss

Question will remain till Nufact 12

22

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

9) Proposed target systems are many, convergence?

Yes, but multiple designs required; different requirements for various applications

Target options for NF:Hg -jet target is the baseline but energy deposition in the magnet is too-high, magnet shielding need to be improved (under re-design).Metal-powder target and solid W bars (that can be exchanged between beam pulses) are studied as mitigation options in case the Hg-jet option energy deposition issue turn to be to difficult to solve.Aim of the feasibility study is to push the Hg-jet option to a realistic design and define if the options under study are a realistic replacement option of the Hg-jet.

23

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

9) Proposed target systems are many, convergence?

Multiple designs required; different requirements for various applications

Superbeam to Frejus

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

10) Material property evolution with time (from radiation, strain & stress and temperature)?

Appropriate material studies under way.

C. Densham

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

3) Does energy deposition pose SC solenoid shielding problem for presently proposed proton drivers?

Challenging problem, robust engineering solution being worked out.

Degradation of superconductor, insulator, thermal conductor, structure etc by irradiation

 some hints from COMET, ITER

Increase inner shielding  3GJ stored energy

Feasibility ?

C, Densham

Alternate target option with Low-Z?

Low-Z  less neutrons


Summary wg3

13) Modeling of pion production complete?

Agreement between two models/codes (MARS and FLUKA) consistent within 10-20% with the HARP data

Recent updates from NA61 (talks in WG2).


Summary wg3

ACTIVITY density in Bq/cm3

molasse

concrete

14) How serious is power deposition in the structures after/around the target (horn, solenoids…)?

 Quite significant. They are modelled accurately; adequate shielding provided

4MW Superbeam Horns

  • packed Ti target, 65%dTi

  • 4MW beam, 4horns, 200days of irradiation

N. Vassilopoulos

4MW NF Solenoids

Still >1MGy/year at downstream

need investigation on

downstream materials

K. McDonald


Summary wg3

11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

Existing machines: PS

E. Benedetto

Existing machines: SPS

still needs studies, Less constrained SF helps

29

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

Decay Ring optimization good with higher SF, solutions exist for small theta13

30

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

ECR Source

T. Lamy

Efficiencies and beam parameters on the way

31

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

Solutions for theta 13 smaller exsist

32

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

11) Will the Beta Beam be possible in the CERN Complex?

Yes, the baseline beta beam is possible to implement

Ion Production

T. Stora

18 Ne under test

6He ok, operation feasable

33

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

12) Verification of the 18Ne production for beta beams?

Tested experimentally

18Ne Production was a serious show stopper

18 Ne under test

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

1) Is Project X a suitable proton driver for the Neutrino Factory?

Yes it is; A complete scheme emerged including stripping injection

R. Garoby

35

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

1) Is Project X a suitable proton driver for the Neutrino Factory?

Yes it is; A complete scheme emerged including stripping injection

36

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

2) What is the path for solving the problem of operating high gradient RF is strong magnetic field?

Ongoing, vigorous experimental program under way at MuCool and MTA at Fermi (first experimental tests coming out)

37

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

38

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

39

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

40

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings?

Working concept under study, specific component being modeled and optimized.

41

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings?

Working concept under study, specific component being modeled and optimized.

42

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG?

EMMA demonstrated device feasibility. Conceptual solution is being studied

43

Shinji Machida

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

Shinji Machida

44

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG?

EMMA demonstrated device feasibility. Conceptual solution is being studied

45

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

6) Can Scaling FFAG be used in other-then-ring configurations?

Complete prototype lattices designed for new applications e.g. prototype decay ring for VLENF

46

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections)

VLENF conceptual design with large acceptance decay ring, Scaling FFAG option

47

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections)

VLENF conceptual design with large acceptance decay ring, Scaling FFAG option

48

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Summary wg3

7) Is there a synergetic path from the Neutrino Factory to MC?

A clear path emerged and being developed within MAP. Usage of components and techniques developed for NF-IDS.

49

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufacf 11 nufact 12 new

NufacF’11 NuFact’12 (new)

1) What combination of proton beam energy and bunch length is the best compromise for integrated muon beam intensity?

2) Important to update the acceleration system of the beta beams from the source to the decay Ring

3) The PS (space charge, instabilities)

4) The SPS (instabilities and RF)

5) Impact of possible high 13on the neutrino facilities, design parameters

6) Operating high gradient normal conducting RF rf cavities in strong magnetic field; gradient degradation, effects of intense ionizing radiation traversing gas?

Ongoing, vigorous experimental program under way at LBNL and MTA at Fermi (first experimental tests coming out)

50

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufact 11 nufact 12

NuFact’11 NuFact’12

7) Does energy deposition pose SC solenoid shielding problem for presently proposed proton drivers?

Challenging problem, robust engineering solution being worked out.

8) Do we have a working Injection/Extraction scheme for NS-FFAG Rings?

Working concept under study, specific component being modeled and optimized.

9) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG?

EMMA demonstrated device feasibility. Conceptual solution is being studied

10) Target handling for Multi MW targets ?

1 MW target handeling needs to be addressed

11) Material property evolution with time (from radiation, strain & stress and temperature)?

Appropriate material studies under way.

51

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


Nufact 11 nufact 121

NuFact’11 NuFact’12

12) Modeling of pion production complete?

Agreement between two models/codes (MARS and FLUKA) consistent within 10-20% with the HARP data

13) How serious is power deposition in the structures after/around the target (horn, solenoids…)?

 Quite significant. They are modelled accurately; adequate shielding provided

14) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections)

VLENF conceptual design with large acceptance decay ring, Scaling FFAG option

52

NuFact'11, E. Wildner, A. Bogacz, M. Yoshida


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