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Particle Production;Kaon and Muon Physics with Project-X Rajendran Raja Fermilab. Photo: H. Hayano, KEK. The Mu2e experiment at Fermilab– Main Injector version– Will likely carry on to the Project-X era.

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slide1

Particle Production;Kaon and Muon Physics with Project-X

Rajendran Raja

Fermilab

Photo: H. Hayano, KEK

Rajendran Raja Project-X

the mu2e experiment at fermilab main injector version will likely carry on to the project x era

The Mu2e experiment at Fermilab– Main Injector version– Will likely carry on to the Project-X era

slide3

The deepest probe of Lepton Flavor Physics: Ultra-rare m-Decays:

First Order FCNC:

Higher order dipole “penguin”:

Virtual n mixing

The MEG(PSI) experiment has probed to 10-11 level.

Forbidden in Standard Model

Observation of neutrino mixing shows this can occur at a very small rate

Photon can be real (m->eg) or virtual (mN->eN)

Rajendran Raja Project-X

3

rare muon decays in project x m n e n sensitivity to new physics
Rare muon decays in Project-X:m-N→e-N Sensitivity to New Physics

Supersymmetry

Compositeness

Predictions at 10-15

Second Higgs doublet

Heavy Neutrinos

Heavy Z’, Anomalous Z coupling

Leptoquarks

After W. Marciano

Rajendran Raja Project-X

mu2e muon beam and detector
mu2e Muon Beam and Detector

for every incident proton 0.0025 m-’s are stopped in the 17 0.2 mm Al target foils

MECO spectrometer design

Rajendran Raja Project-X

6

cost and schedule
Cost and Schedule
  • This is a technically limited schedule
  • Critical Path is Superconducting Solenoids
  • $200M “fully-loaded” Total Cost

data-taking 1st quarter Calendar 2016

Rajendran Raja Project-X

muon g 2 @ fnal
Muon g-2 @ FNAL
  • Based on results of the August 2010 Intensity Frontier review, DOE has decided to go ahead with the next generation muon g-2 experiment by moving the storage ring from Brookhaven to Fermilab.
  • Fermilab can deliver 21x the total Brookhaven statistics in less than 2 years.
  • Modest modifications of existing beamlines and detectors allow us to drastically reduce the dominant systematic errors in the precession frequency measurement.
  • This is matched with a world wide program to validate the SM calculation of g-2 (Novosibirsk, KLOE, B-factories, BES. Lattice…)
  • Currently reevaluating the schedule given budget constraints but expect to start taking data in the middle of this decade.

Rajendran Raja Project-X

project x talk proper
Project-X talk proper
  • Kaons as part of Project-X are a direct result of the CW option ( as are the nuclear physics options). Much higher intensities result from the CW option.
  • CW option is a result of the push to do ADS using project-X. 2007 Accel Division Seminar I gave on ADS mentioned CW. It was picked up by several attendees and Option 2 was born.
  • AHIPA09 workshop further cemented the broad base of physics possible using a CW Project
  • ADS as part of Project-X was further strengthened at the Accelerators for America’s future Workshop held by the DoE.

Rajendran Raja Project-X

the project x research program
The Project-X Research Program
  • Long baseline neutrino oscillation experiments:

Driven by a high-power proton source with proton energies between 50 and 120 GeV that would produce intense neutrino beams directed toward massive detectors at a distant deep underground laboratory.

  • Kaon, muon, nuclei & neutron precision experiments driven by high intensity proton beams running simultaneously with the neutrino program:

These could include world leading experiments searching for muon-to-electron conversion, nuclear and neutron electron dipole moments (edms), and world-leading precision measurements of ultra-rare kaon decays.

  • Platform for evolution to a Neutrino Factory and Muon Collider

Detailed Discussion:Project X website

Rajendran Raja Project-X

the window of ultra rare kaon decays at project x
The Window of Ultra-rare Kaon Decays at Project X

Standard Model rate of 3 parts per 100 billion! Project X will has sensitivity for 1000 SM events

BSM particles within loops can increase the rate by x10 with respect to SM.

Rajendran Raja Project-X

rates sensitive to other bsms warped extra dimensions as a theory of flavor
Rates sensitive to other BSMs:Warped Extra Dimensions as a Theory of Flavor??

Rajendran Raja Project-X

slide13

Buras et al. SM accuracy of <5%, motivates 1000-event experiments

Effect of Warped Extra Dimension Models on Branching Fractions

Rajendran Raja Project-X

this science has attracted competition the proton source landscape this decade
This Science has attracted Competition:The Proton Source Landscape This Decade...

Project-X

  • Pulsed machines driving neutrino horns:

SPS (0.5 MW), Main Injector ( 0.3 MW now, 0.7 MW for Nova),

JPARC (plan for 1.7 MW)

  • Cyclotrons and synchrotrons driving muon programs

PSI (1.3 MW, 600 MeV), JPARC RCS (0.1-0.3 MW)

  • Synchrotrons driving kaon physics programs.

SPS (0.015 MW), JPARC (goal of >0.1 MW), Tevatron (0.1 MW)

  • Linear machines driving nuclear and neutron programs:

SNS, LANL, FRIB….not providing CW light-nuclei beams.

M Seidel, PSI

Rajendran Raja Project-X

the high duty factor proton source landscape this decade
The High Duty Factor Proton Source Landscape This Decade...

*

x Duty Factor

Project-X CW-Linac

PSI

*

TRIUMF

power

*

Stopped/Slow kaon yield/Watt

* Beam power x Duty Factor

Rajendran Raja Project-X

continuous wave cw linac for rare processes
“Continuous Wave” (CW) Linac for Rare Processes…
  • Beam extraction challenge is finessed.
  • Duty factor is very high.
  • The high frequency bandwidth intrinsic to a Linac can be exploited to generate excellent time resolution (dt~20psec), a very powerful tool to face a high intensity environment.
  • JLAB has demonstrated that beam can be cleanly multiplexed between many targets with minimal losses. These “touchless” RF beam multiplexers are enabled by the high linac bandwidth.
  • Excellent beam power scaling.

Rajendran Raja Project-X

an incomplete menu of world class research targets enabled by project x continued
An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…

Day-1 Experiment

Muon Physics:

  • Next generation muon-to-electron conversion experiment, new techniques for higher sensitivity and/or other nuclei.
  • Next generation (g-2)m if motivated by next round, theory, LHC. New techniques proposed to JPARC that are beam-power hungry…
  • m edm
  • mg3e
  • m+e-gm-e+
  • m-Agm+A’ ; m-Age+A’ ; m-e-(A)ge- e-(A)
  • Systematic study of radiative muon capture on nuclei.

Rajendran Raja Project-X

slide19

Pursuing the Holy Grail of Stopped Muon Experiments:A High Acceptance Mono-energetic muon source—synergy with muon collider/neutrino factory

From the PX muon white paper

Rajendran Raja Project-X

an incomplete menu of world class research targets enabled by project x continued1
An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…

Day-1 Experiments

Kaon Physics:

  • K+ gp+nn: >1000 events, Precision rate and form factor.
  • KL gp0nn: 1000 events, enabled by high flux & precision TOF.
  • K+ gp0m+n: Measurement of T-violating muon polarization.
  • K+ g(p,m)+nx: Search for anomalous heavy neutrinos.
  • KL gp0e+e-: <10% measurement of CP violating amplitude.
  • KL gp0m+m-: <10% measurement of CP violating amplitude.
  • K0gX: Precision study of a pure K0 interferometer:

Reaching out to the Plank scale (DmK/mK ~ 1/mP)

  • K0,K+ gLFV: Next generation Lepton Flavor Violation experiments

…and more

Rajendran Raja Project-X

taking a page from the jparc hadron hall playbook one target can serve multiple kaon experiments
Taking a page from the JPARC hadron hall playbook: One target can serve multiple kaon experiments.

Neutral K experiment

Charged K experiment

From the PX kaon white paper

Rajendran Raja Project-X

an incomplete menu of world class research targets enabled by project x continued2
An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…

Day-1 Experiment

Nuclear Enabled Particle Physics:

  • Production of Ra, Rd, Fr isotopes for nuclear edm experiments that are uniquely sensitive to Quark-Chromo and electron EDM’s.

Baryon Physics:

  • pp gS+K0p+ ; S+gp+m+m-(HyperCP anomaly, and other rare S+ decays)
  • pp gK+L0p+ ; L0 ultra rare decays
  • L0nL0 oscillations (Project-X operates below anti-baryon threshold)
  • Neutron EDMs

Rajendran Raja Project-X

road to future progress neutrino research program
Road to Future Progress: Neutrino Research Program
  • Strong international community. US community is healthy and growing.
  • Explicitly engage the Neutrino Factory community to explore and develop a design driven by Project-X—Leads to muon collider
  • Good opportunities for collaboration and leadership.

Rajendran Raja Project-X

road to future progress muon research program
Road to Future Progress: Muon Research Program
  • International community active, current Fermilab community is small, but growing with Mu2e and the possibility of (g-2)m.
  • No conceptual accelerator & beam design yet for driving next-generation mge conversion experiment beyond Mu2e and COMET at JPARC. A PRISM (FFAG) based solution needs further accelerator design work. Interesting synergies with Muon Collider cooling concepts are being explored that would clearly exploit Project-X.
  • Great opportunities for collaboration and leadership.

Rajendran Raja Project-X

road to future progress kaon research program
Road to Future Progress: Kaon Research Program
  • International community active, Fermilab community is dormant now. Buoyed to some extent now by the US quark flavor physics community—but this community is currently under stress regarding futures.
  • Excellent basis for 1000-event K+ gp+nnexperiment based on extrapolating techniques developed and demonstrated by BNL E787/E949 experiments.
  • Good basis for 1000-event KLgp0nnexperiment based on the KOPIO conceptual design developed for the BNL AGS.
  • Great opportunities for collaboration and leadership.

Rajendran Raja Project-X

summary
Summary

Project-X is a next generation high intensity proton source that will deeply reach for physics beyond the Standard Model and incisively probe of the origins of matter:

Neutrinos: An after-burner for LBNE that reduces the tyranny of

(Detector-Mass xRunning-time) by x3, and a foundation for a Neutrino Factory.

Rare Processes: Game-changing beam power and timing flexibility that can support a broad range of particle physics experiments.

Prospects: International collaboration formed, ongoing substantial US (DOE) investments in R&D (Project-X + SRF + ILC) on Super Conducting RF accelerator technology supporting Project-X.

Earliest construction start of 2015, operations in 2020.

Rajendran Raja Project-X

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