Neutrino Factory and Muon Collider Collaboration DOE Briefing Meeting Alan Bross.

Neutrino Factory and Muon Collider Collaboration

DOE Briefing MeetingAlan Bross

2Alan Bross NFMCC DOE Briefing March 1, 2007

NFMCC Mission

Extensive experimental program to verify the theoretical and simulation predictions

To study and develop the theoretical tools, the software simulation tools, and to carry out R&D on the hardware that is unique to the design of Neutrino Factories and Muon Colliders

Question: Why has the collaboration been so driven and focused in the faceof the very difficult fiscal constraints on our activities


Evolution of a Physics Program

Intense K physics Intense Low-energy

muon physics Neutrino Factory Higgs Factory Energy Frontier

5 TeV

circa 1997-1999


The Muon Collider Motivation – Elevator Spiel

PRSTAB – May 3, 2002

Energy Frontier Physicswith SMALL Footprint

More recent conceptsextend s to 8 TeV

(on FNAL site)


Muon Collider – Physics Motivation

Reach Multi-TeV Lepton-Lepton Collisions at High Luminosity

Muon Colliders would have special role for precision measurements.

Small E beam spread –Precise energy scans

Small Footprint -Could Fit on Existing Laboratory Site


Muon Collider at the Energy Frontier

Comparisons with Energy Frontier e+e-

Collider For many processes - Similar cross sections Advantage in s-channel scalar production

(mm/me)2

Beam Polarization useful Muon Decay backgrounds and Detector

implications


S-channel Coupling to Higgs


Higgs


Resolving degenerate Higgs in MSSM


Muon Collider-NF – SynergyNaturally Staged Physics Program

Neutrino Factory Muon Collider

ISS Preliminary Design


Physics Synergy – Neutrino Questions(Not likely answered with an Energy Frontier Machine)

What is the origin of neutrino mass? Did neutrinos play a role in our existence? Did neutrinos play a role in forming

galaxies? Did neutrinos play a role in birth of the

universe? Are neutrinos telling us something about

unification of matter and/or forces? Will neutrinos give us more surprises?Big questions tough questions to answer

Is a Neutrino Factory needed in order to answer these questions?


Neutrino Factory- ISS

(3m312=0.0022 eV2

Best possible reach in for all performance indicators =Neutrino factory

Harold G. KirkBrookhaven National Laboratory

Future Plans for NFMCC

DOE Briefing

Germantown, Md March 1, 2007

Harold G. Kirk

Commonality for a Neutrino Factory and a Muon Collider

Proton Driver primary beam on production

target Target, Capture, and Decay

create ’s; decay into ’s Phase Rotation

reduce E of bunch Cooling

reduce emittance of the muons Acceleration

Accelerate the Muons Storage Ring

store for ~1000 turns

Multi-MW Proton Beam

The MERIT Experiment

(MERcury Intense Target)

The MICE Experiment

(Muon Ionization Cooling Exp.)

EMMA (Electron Model for

Muon Accleration)

NFMCC and MCTF priority

Harold G. Kirk

Key Differences for the two Facilities

Neutrino Factory Muon Collider

Cooling reduce transverse

emittance ε┴ ~ 25 mm

Acceleration Accelerate to 20-40 GeV

Storage Ring No intersecting beams

Bunch Merging

Cooling reduce 6D emittance

ε┴ ~ 3-25 μm

εL ~ 70 mm

Acceleration Accelerate to 1-2 TeV

Storage Ring Intersecting beams

Harold G. Kirk

Why Study these two Facilities?

EPP2010

“The United States should remain globally competitive in elementary particle physics by playing a leading role in the worldwide effort to aggressively study Terascale physics.”

The Muon Collider program contributes to this goal

Action Item 5. “The committee recommends that the properties of neutrinos be determined through a well-coordinated, staged program of experiments developed with international planning and cooperation.”

The International Design Study contributes to this Action Item

Harold G. Kirk

The International Design Study

Goal: Unified cost-optimized solution for a

Neutrino Factory by 2010.

Engineered design by 2012.

The International Design Study (IDS) will build on the successful conclusion of the International Scoping Study (ISS) in which an international study team developed a unified set of parameters for a future Neutrino Factory.

The year 2012 is significant in that Europe’s LHC debt will be retired by that year.

Harold G. Kirk

Key R&D Issues toward a Muon Collider

High Power Targetry – The MERIT experimentInitial Cooling – The MICE experiment (4D Cooling)201 MHz RF – The FNAL MuCool Program

Investigate Gas-Filled RF cavities (Muons Inc.) Investigate RF cavities in presence of high magnetic fields Obtain high accelerating gradients (~15MV/m)

6D Cooling RFOFO “Guggenheim” Helical Channel Cooling (Muons Inc. + MCTF) Parametric Resonance Ionization Cooling (Muons Inc.)

Bunch RecombinationAcceleration– A cost driver

FFAGs – The EMMA experiment in the UK Multi-turn RLAs – a BIG cost reducer

Theoretical Studies Analytic Calculations Lattice Designs Numeric Simulations

Harold G. Kirk

Muon Technical Advisory Committee (MUTAC)

Report of 2006 MUTAC to the Muon Collaboration Oversight Group (MCOG—Bond, Holmes, Siegrist)

“The committee recommends that the funding agencies make every effort to provide $1M to fund the coupling coil as soon as possible. In addition the agencies should work to provide at least a $400k/yr increase in annual funding to the NFMCC. Both last year’s committee and this believe that funding levels substantially above the FY06 levels could be used effectively to advance the goals of NFMCC.”

Harold G. Kirk

The Marx AARD Panel Report

“We support the MICE project as a critical feasibility demonstration for muon storage rings and colliders. A reasonable pace of progress on other necessary muon-related R&D tasks is not sustainable at the current level of funding. Without increased support, essential intellectual resources will disappear”.

“… a reasonable scale would be to restore the funding to the level of four or five years ago which is about twice the current funding level of 3.6 M$ from DOE”.

Harold G. Kirk

A Road Map toward realizing a Muon Collider

Consensus from the recent (Feb12-15 2007) Low Emittance MC Workshop

With adequate R&D a Muon Collider is achievable

We (the NFMCC) recommend: Restoring the NFMCC collaboration funding to it’s FY00 levels ($8M/yr) Funding the FNAL Muon Collider Task Force Initiative (($2.8M/yr $5M/yr)

With such a program, in 5 years we can accomplish: Establish the enabling technology in a 3 years program Deliver a Muon Collider Feasibility Study after the following 2 years

Characterize a fully consistent MC scenario Deliver an engineered initial cost estimate Be prepared for developing a CDR

Muon Collider R&D Program:Status and Issues

Michael S. ZismanNFMCC Project ManagerCenter for Beam Physics

Lawrence Berkeley National Laboratory

DOE Briefing Meeting–GermantownMarch 1, 2007

March 1, 2007 DOE Briefing-Zisman 23

Technical Challenges•Two main challenges for a muon-based facility (Neutrino Factory or Muon Collider)— muons have short lifetime (2.2 s at rest)

o puts premium on rapid beam manipulations– high-gradient NCRF (in magnetic field) for cooling– ionization cooling technique (presently undemonstrated)– fast acceleration system

— muons are created as tertiary beam (p )o low production rate

– requires target that can handle multi-MW beamo large muon beam transverse phase space and energy spread

– requires ionization cooling (only scheme fast enough)– requires high acceptance acceleration system and decay ring

•Cooling requirements for Muon Collider more stringent than for Neutrino Factory


Muon Collider R&D Program (1)

•Goal— to demonstrate feasibility of developing a design for a Muon

Collider of Ec.m. ≥ 1.5 TeV and luminosity ≥ 1034 cm-2 s-1

•Ongoing R&D— theoretical studies, both analytic and simulation, on how to

incorporate the new ideas into a coherent design for a collider— development and testing of high-power production targets

capable of handling 1-4 MW of proton beam power (MERIT)

— demonstration of transverse cooling of muons with LH2 and other materials (MICE)

— design of intense proton driver capable of producing short bunches (1-3 ns)

— development of efficient and cost-effective systems for rapid acceleration of muons


Muon Collider R&D Program (2)

•New R&D elements— experimental study of gas-filled RF cavities with beam— development and testing of conductor materials for HTS high-field

superconducting magnets— fabrication and testing of model helical cooling channel magnet

for 6D cooling— feasibility study of complete Muon Collider scenario— demonstration of helical cooling channel (MANX; possible MICE

follow-on)— demonstration of “Guggenheim” 6D cooling channel (possible

MICE follow-on)

•Aim in next 5-6 years is to reach the stage to assess— feasibility of 1.5 TeV collider— preliminary cost estimate and timeline for this facility


Muon Collider R&D Time Line

•Time scale (assuming adequate funding support)— complete initial studies within about 3 years— “feasibility study” of complete Muon Collider facility will take

about 2 more years— demonstration experiments will take about 3-4 years (running in

parallel with feasibility study)

FY08 FY09 FY10 FY11 FY12 FY13 FY14

Initial studies

Muon Collider feasibility study

Demonstration experiments


Muon Collider Incremental Cost•To carry out an aggressive Muon Collider R&D program will require incremental funding beyond the present NFMCC annual budget of $3.6M— below is a first-cut estimate of what additional funds might be

neededo caveat: costs of the experimental demonstrations cannot be fixed until the details are better defined, which may take several years

— required funding is at the level of 2% of HEP fundso a modest investment for a potentially big payoffo restores NFMCC funding to level recommended by Marx subpanel

FY08 FY09

FY10

FY11

FY12

FY13

FY14

NFMCC base 3.6 3.6 3.6 3.6 3.6 3.6 3.6

NFMCC new 2 2 2.5 5 5 5 5

MCTF 2.8 5 5 5 5 5 5

Total 8.4 10.6 11.1 13.6 13.6 13.6 13.6


Additional NFMCC Support (1)•Three categories where additional support is needed immediately:— completing our hardware commitments to international

experiments— providing common funds for the MICE experiment— restoring the health of our simulations and theory effort

•Hardware commitments [$4.4M remaining]— NFMCC commitments for MICE and MuCool are large and beyond

our ability to complete in a timely wayo spectrometer solenoids (2 ea., ordered) [TEC $1.5M]o RFCC modules (2 ea.) [TEC $3.7M]

– each comprises 4 201-MHz RF cavities [$1.15M] + 1 CC [$0.7M]

o Cherenkov-1 detector [TEC $0.1M]o Coupling Coil for MuCool [TEC $0.9M; $0.3M in hand]


Additional NFMCC Support (2)•MICE hardware commitments will be honored at present budget levels, but 1–2 years late— any substantial need for contingency would cause further delays— we continue to try to mitigate this by working to find partners

o exploring partnership with ICST-Harbin to help with coupling coil fabrication for MICE– and possibly for MuCool as well

o exploring ways to partner with UK groups on cavity fabrication

•We propose to finish the MICE hardware in two years— and then move aggressively to collider design and hardware

developmento requires an increment of $2.5M (over two years)


Need for Additional Support (3)•Effort needs [$750K/yr]

— MICE common fund contribution [£3K/yr per Ph.D.; TEC ≈$250K/yr] — additional post-docs [$250K/yr]— restore BNL group to full strength [$250K/yr]

•Manpower has eroded away after years of flat budgets— need effort for IDS, MICE analysis, EMMA design, and MCTF work— we continue to try to get NSF support also

o for post-docs (University Consortium proposal; in limbo for 2 years)o for MuCool (applying for MRI grant again this year)

•In out-years, NFMCC will carry out Muon Collider R&D and design effort in conjunction with MCTF— feasibility study, with engineering— hardware development and testing (Guggenheim components; HCC

components)


Closing Comments•Despite limited funding, NFMCC continues to make excellent progress on carrying out its R&D program— 201 MHz test cavity completed and tested to 16 MV/m— MICE spectrometer solenoids ordered— completed ISS; write-up in progress

o developing follow-on plans for IDS— MERIT preparations nearly completed

o 15 T magnet and Hg-jet target system operational

•Our work provides potential choices for HEP community— muon-based accelerators/colliders offer advantages over other

approacheso they also provide an intense source for low-energy muon physics

•We have plans to aggressively pursue Muon Collider R&D in collaboration with Fermilab MCTF program


Road Map to a Muon Collider

•Consensus from recent (Feb. 12-16, 2007) Low Emittance MC Workshop— with adequate R&D a Muon Collider is achievable

•NFMCC recommends:— restoring NFMCC funding to its FY00 level ($8M/yr)— funding FNAL MCTF initiative ($2.8M/yr $5M/yr)

•With such a program, in 5 years we can accomplish a lot— establish the enabling technology in the first 3 years— deliver a Muon Collider feasibility study in the following 2 years

o characterize a fully consistent MC scenarioo deliver an engineered initial cost estimateo be ready to develop a CDR thereafter

Neutrino Factory and Muon Collider Collaboration DOE Briefing Meeting Alan Bross.

Documents

Transcript of Neutrino Factory and Muon Collider Collaboration DOE Briefing Meeting Alan Bross.