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Proton Drivers. Keith Gollwitzer Accelerator Division Fermilab IDS-NF 9 th Plenary Meeting Oct 8-10 , 2012. Outline. Proton Drivers Summary Information & slides taken from recent presentations at workshop & conferences Recent Project X news Staging Final Focus B eam L ine comments.

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Proton drivers

Proton Drivers

Keith Gollwitzer

Accelerator Division

Fermilab

IDS-NF 9thPlenary Meeting Oct 8-10, 2012


Outline

Outline

  • Proton Drivers Summary

    • Information & slides taken from recent presentations at workshop & conferences

  • Recent Project X news

    • Staging

  • Final Focus Beam Line comments

  • Gollwitzer -- 9th IDS-NF Meeting


    Proton driver options

    Proton Driver Options

    Two schemes

    Three sites – All upgrades

    RAL – ISIS

    CERN – SPL

    FNAL – Project X

    Gollwitzer -- 9th IDS-NF Meeting


    Build upon isis upgrade

    Build upon ISIS Upgrade

    • An upgrade to ISIS

      • Upgrade existing Linac

      • New Booster synchrotron

        • 3.3 GeV

      • New Linac to directly inject to Booster synchrotron

        • Multi-MW possible

    • Requires a 2nd RCS for NF

    Gollwitzer -- 9th IDS-NF Meeting


    Sharing isis

    Sharing ISIS

    • Based on MW ISIS upgrade

    • with 800MeV Linac and 3.2

    • (≈ 3.3) GeV RCS

    • Assumes a sharing of the beam

    • power at 3.2 GeV between the

    • two facilities

    • Both facilities can have the

    • same ion source, RFQ, chopper,

    • linac, H− injection, accumulation

    • and acceleration to 3.2 GeV

    • Requires additional

    • RCS machine in

    • order to meet

    • thepower

    • and energy

    • needs of the

    • Neutrino Factory

    • Options for the bunch compression to 1 – 3 ns RMS bunch length:

    • - adiabatic compression in the RCS

    • - ‘fast phase rotation’ in the RCS

    • - ‘fast phase rotation’ in a dedicated compressor ring

    Gollwitzer -- 9th IDS-NF Meeting


    Isis 2 nd rcs

    ISIS 2nd RCS

    Parameters of 3.2 – 9.6 GeV RCS

    Gollwitzer -- 9th IDS-NF Meeting


    Build upon spl upgrade

    Build upon SPL Upgrade

    • Rebuilding of the injector train for the CERN program

      • Start with Low Power version of SPL to fulfill needs of current CERN program

      • Upgrade SPL to High Power

        • 4 MW at 5 GeV

    • Requires Accumulator and Compressor rings

    Gollwitzer -- 9th IDS-NF Meeting


    Spl to proton driver

    SPL to Proton Driver

    Future

    Present

    LP-SPL: Low Power-Superconducting Proton

    Linac (4 GeV)

    Proton flux / Beam power

    HP-SPL: Upgrade of infrastructure (cooling water,

    electricity, cryogenics etc.)

    Replacement of klystron power supplies

    Addition of 5 high bcryomodules to

    accelerate up to 5 GeV

    50 MeV

    Linac2

    Linac4

    160 MeV

    PSB

    LP-SPL

    1.4 GeV

    4 GeV

    PS

    26 GeV

    PS2

    50 GeV

    Main requirements of PS2 on its injector:

    Output energy

    SPS

    450 GeV

    LHC /

    sLHC

    7 TeV

    Gollwitzer -- 9th IDS-NF Meeting


    New rings

    New Rings

    • Accumulation of beam from the High Power SPL in a fixed energy Accumulator (5 GeV, 4MW beam power).

    • Bunch compression («rotation») in a separate Compressor ring

    Gollwitzer -- 9th IDS-NF Meeting


    Build upon project x

    Build upon Project X

    • Upgrade Project X

      • 4 MW at 8 GeV

        • Increase particles per linac bunch

        • Increase pulsed linac duty factor

    • Repackage linac beam for ~50 Hz delivery

      • Accumulator Ring

        • Collect linac beam into bunches

      • Compressor Ring

        • Narrow bunches to <= 3 ns

      • Single Bunch Transfer/Extraction

    Gollwitzer -- 9th IDS-NF Meeting


    Project x nf layout

    Project X - NF Layout

    Accumulator Ring

    4MW Target

    Compressor Ring

    ??

    ??

    ??

    Gollwitzer -- 9th IDS-NF Meeting


    Proton driver upgrades

    Proton Driver Upgrades

    Gollwitzer -- 9th IDS-NF Meeting


    Proton driver concerns

    Proton Driver Concerns

    • Stripping

      • Accumulation of protons from Hminus linac beam

      • Handling of unconverted beam

    • Intense particle bunches

      • Instabilities?

        • Example of look at longitudinal

    V. Lebedev: maximum power per bunch

    Final Bunch Parameters

    (Compressor Ring)

    Initial Ring Bunch Parameters

    (Accumulator Ring)

    Gollwitzer -- 9th IDS-NF Meeting


    Project x old news

    Project X (old) News

    • US DOE recognizes Project X (source, CW Linac, 3 GeV experimental area, Pulsed Linac, Main Injector/Recycler modifications) is too expensive.

      • Asked to stage Project X with compelling physics at each stage

    Gollwitzer -- 9th IDS-NF Meeting


    Desired project x siting

    Desired Project X Siting

    3 GeV CW Linac

    3 GeV Experiments

    8 GeV Transfer Line

    3-8 GeV PulsedLinac

    Tevatron Tunnel

    Main Injector & Recycler

    Gollwitzer -- 9th IDS-NF Meeting


    Add rings

    Add Rings

    Possible

    Compressor

    Locations

    Accumulator

    Gollwitzer -- 9th IDS-NF Meeting


    Possible staging cartoon

    Possible Staging Cartoon

    Gollwitzer -- 9th IDS-NF Meeting


    Add rings1

    Add Rings...

    Gollwitzer -- 9th IDS-NF Meeting


    Final focus beam line

    Final Focus Beam Line

    • Deliver beam from last ring to target

    • Issues

      • Collimation ?

      • Connection to target area is at “angle” since will need to have helical orbit in solenoid

      • Last magnetic element location with respect to the target infrastructure

      • Window(s)

        • Beam vacuum separated from Mercury containment

    Gollwitzer -- 9th IDS-NF Meeting


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