Potential Fermilab Muon Campus & Storage Ring Experiments

24 May 2021, 08:00 → 27 May 2021, 13:00 US/Central

Jason Crnkovic (University of Mississippi), Sudeshna Ganguly (Fermilab), Diktys Stratakis (Fermi National Accelerator Laboratory)

This workshop provides a venue for exploring ideas to build short-, medium-, and long-term muon- and non-muon-based experiments that will have a small incremental cost on top of existing infrastructure investments. The goal of this workshop is to promote the development of proposals for the current Snowmass exercise.

SnowMass2021

The Snowmass timeline has been delayed due to the COVID pandemic and activities are paused until June.  Please see Snowmass Announcements for details.

 

Abstract submission deadline is Apr 26, 2021.

Registration deadline is May 10, 2021.

submitted_snowmass_loi.pdf

workshop_poster.pdf

Monday, 24 May

1 Welcome from Fermilab

Speaker: Kevin Pitts (Fermilab/University of Illinois)

Muon g-2 Negative Muon Running & Dedicated EDM: Introduction

Session Chairs: Saskia Charity (Fermilab) and Breese Quinn (University of Mississippi)

Conveners: Breese Quinn (University of Mississippi), Saskia Charity

2 Muon g-2 & EDM theory motivation

Speaker: Dominik Stoeckinger (TU Dresden)

2021MayFermilabEDMgm2Workshop.pdf

3 Lorentz Invariance & CPT symmetry theory motivation

The prospects for testing Lorentz and CPT symmetry in muon g-2 experiments are presented. Using muons for testing Lorentz and CPT symmetry is essential as existing constraints on muon Lorentz- and CPT-violating operators comprise only a small fraction of the available limits. Possible signals for Lorentz and CPT violation in g-2 experiments include annual and sidereal variations of the spin-precession frequency. The advantages of performing negative muon measurements are considered. Fermilab and J-PARC experiments are sensitive to slightly different combinations of Standard-Model Extension (SME) coefficients. A discussion about the relative advantages of both experiments is included.

Speaker: Arnaldo Vargas (Loyola University New Orleans)

Fermi21.pdf

4 AP0 target station capabilities & status/Muon Campus Operations for negative muon & dedicated EDM measurements

Speaker: James Morgan (FNAL)

Muon Campus operation for Mu-, EDM and Target Station capabilities.pdf

5 Estimating target performance for negative muon production

Speaker: Eremey Valetov (SJTU / MSU)

Valetov_EV_AP0-Particle-Production.pdf

6 A Dedicated Muon EDM Experiment in the Muon `g-2’ Ring

With the recent first results of Fermilab Muon g-2 experiment, the discrepancy from theory of the measured magnetic dipole moment (MDM) of the muon looks even more persistent, and there is much motivation to search for new physics in spin precession experiments. We present initial studies into the possibility of using a modified version of the Muon g-2 storage ring to search for a non-zero muon EDM. Using both electric and magnetic fields to produce a "frozen spin" condition for the MDM, while enhancing precession due to an EDM, the storage ring would operate at a lower central muon momentum than for the g-2 measurement, which can be obtained using high intensity beam from the PIP-II linear accelerator. Preliminary calculations and simulation results of beam production at 800 MeV, plus the determination of the closed orbit inside the hybrid ring configuration muon beam are presented. The possible operational range in momentum and energy of muons and their respective window of electric and magnetic field values shall be presented. Challenges in the pursuance of this technique and systematic errors inherent in this approach are discussed.

Speaker: Aakaash Narayanan

Muon_EDM_Talk_Final.pdf

09:54 Coffee Break

7 Panel discussion on Muon g-2 Negative Muon Running

Moderators: Saskia Charity (Fermilab), Breese Quinn (University of Mississippi)
Panelists: Jim Morgan (Fermilab), Hogan Nguyen (Fermilab), Brendan Kiburg (Fermilab), Dave Hertzog (University of Washington)

Speakers: Breese Quinn (University of Mississippi), Brendan Kiburg (Fermilab), David Hertzog (University of Washington), Hogan Nguyen (Fermilab), James Morgan (FNAL)

Mu Minus (personal) Considerations.pdf

Quinn_Mu-Run_PFMCSRE_052421.pdf

8 Panel Discussion on dedicated EDM measurement

Moderators: Saskia Charity (Fermilab), Breese Quinn (University of Mississippi)
Panelists: Brendan Casey (Fermilab), Peter Winter (Argonnr National Laboratory), Joe Price (University of Liverpool), Becky Chislett (University College London)

Speakers: Brendan Casey (FNAL), Joe Price (Univ. of Liverpool), Peter Winter (Argonne National Laboratory), Rebecca Chislett

Muon g-2 Negative Muon Running & Dedicated EDM: Open Discussion

Session Chairs: Saskia Charity (Fermilab) and Breese Quinn (University of Mississippi)

Conveners: Breese Quinn (University of Mississippi), Saskia Charity

Tuesday, 25 May

Storage Ring Experiments: Introduction

Session Chairs: Esra Barlas Yucel (University of Illinois at Urbana-Champaign) and Andre Luiz De Gouvea (Northwestern University)

Conveners: Andre de Gouvea (Northwestern University), Esra Barlas-Yucel (University of Illinois at Urbana-Champaign)

9 Panel discussion on charged pion lifetime, radiative muon decay, muon neutrino mass, and Proton/Deuteron EDM theory motivation

Moderators: Esra Barlas Yucel (University of Illinois at Urbana-Champaign), Andre Luiz De Gouvea (Northwestern University)

Panelists: Jordy de Vries (University of Massachusetts Amherst), Vincenzo Cirigliano (Los Alamos National Laboratory), Robert Shrock (Stony brook university), Massimo Passera (INFN)

Speakers: Jordy de Vries (UMass), Massimo Passera (INFN Padova), Robert Shrock (C. N. Institute for Theoretical Physics, Stony Brook University), Vincenzo Cirigliano (Los Alamos National Laboratory)

charged-pion-lifetime.pdf

DeuteronEDM_discussion.pdf

muc.pdf

Passera_25052021.pdf

10 Muon neutrino mass measurement

Speaker: Priscilla Cushman (University of Minnesota)

NuMass2021.pdf

11 Pion lifetime measurement

Speaker: Tim Gorringe (Univ of Kentucky)

pionlifetimemeasurement.pdf

09:40 Coffee Break

12 Radiative muon decay measurement

Speaker: Prof. Kim-Siang Khaw (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)

MuonCampus_20210525_KimSiangKhaw.pdf

13 Physics options with negative muons, polarized proton and deuteron beams in the muon g-2 ring

Running with negative muons presents a special challenge due to the very strict vacuum requirements operating the electrostatic quadrupoles. We revisit the option of using magnetic focusing with the added benefit of an RF system, first proposed by Yuri Orlov in the sixties, to reduce the momentum dispersion effect to the required level. In that case, we could also include polarized proton beams to map the magnetic field of the storage region directly.
Finally, we will explore the options of launching frozen-spin proton and deuteron EDM experiments using this ring. Interestingly, the muon g-2 ring offers a unique geometry for reduced systematic error levels, enough to make them highly competitive to the neutron EDM experiments under current consideration.

Speaker: Yannis Semertzidis (Physics Department, KAIST)

Note_Added_After_Discussions.pdf

YkS_future_g2_EDM_2021_0526.pdf

14 Proton EDM

Speaker: William Morse (BNL)

Storage Ring EDM Experiment May 2021.pdf

15 Muon Campus operations for pion

Speaker: James Morgan (FNAL)

Muon Campus operation for pions.pdf

Storage Ring Experiments: Open Discussion

Session Chairs: Esra Barlas Yucel (University of Illinois at Urbana-Champaign) and Andre Luiz De Gouvea (Northwestern University)

Conveners: Andre de Gouvea (Northwestern University), Esra Barlas-Yucel (University of Illinois at Urbana-Champaign)

Wednesday, 26 May

Muon Campus Experiments: Introduction

Session Chairs: David Tarazona (University of Liverpool) and Mary Convery (Fermilab)

Conveners: David Tarazona (University of Liverpool), Mary Convery (Fermilab)

Workshop_MC_SR_Exps_Day3_Intro.pdf

16 Particle Beams for the REDTOP Experiment

The existing and possible future facilities available at the Fermilab accelerator complex allow for new experiments aimed at studying rare meson decays with high statistics. The existing Delivery Ring could be modified in order to provide a CW beam with variable energy for producing light mesons in large quantities. PIP-II (at 920 MeV) or a possible new booster synchrotron would enable beams suitable for, respectively, a tagged-𝜂 and a tagged-𝜂' factory. Various possible options will be discussed during the presentation.

Speaker: Mike Syphers (Northern Illinois University / Fermilab)

REDTOP4fermiMtg2021.pdf

17 800 MeV Resonant Extraction from the Delivery Ring

Speaker: John Johnstone (Fermilab)

third integer DR extraction 800 MeV.pptx

18 The Physics of REDTOP

The 𝜂 and 𝜂′ mesons are almost unique in the particle universe since they are Goldstone boson and the dynamics of their decay are strongly constrained. The integrated eta meson samples collected in earlier experiments have been about ~109 events, dominated by the WASA at Cosy experiment, limiting considerably the search for such rare decays. A new experiment, REDTOP, is being proposed, with the intent
of collecting more than 1013 eta/year (1011 eta'/year) for studying of rare 𝜂 decays.
Such statistics are sufficient for investigating several symmetry violations, and for searches of new particles beyond the Standard Model.
With tagged-eta experiment the fully constrained kinematic of the process will allow for searches of light dark matter with a "Missing 4-momentum technique" which, at present, cannot be exploited by any other existing or proposed experiment.
The physics program and the detector for REDTOP will be discussed during the presentation.

Speaker: Anna Mazzacane (Fermilab)

MuonCampusWorkshop_REDTOP_Mazzacane_2021_05_26.pdf

19 The REDTOP Experiment

Speaker: Corrado Gatto (INFN and Northern Illinois University)

MuonCampusWorkshop_Gatto5242021.pptx

20 Mu2e-II

Speaker: Sophie Middleton (Caltech)

Workshopv3.pdf

Workshopv3.pdf

21 Muχe: A Familon Search Experiment Using HPGe Detectors

Speaker: David Koltick (Purdue University)

Abstract_Familon_Search.pdf

Familon_Fermilab_Koltick.pdf

09:30 Coffee Break

22 Planned Mu2e target test at AP0

Speaker: Dave Pushka (Fermilab)

Planned Mu2e Target Test at AP0.pdf

Planned Mu2e Target Test at AP0.pptx

23 PIP-II upgrades

Speaker: Eduard Pozdeyev

PIP_II_Pozdeyev_Muon_Campus_Workshop.pptx

24 M^3 "Muon Missing Momentum

Speaker: Yonatan Kahn (University of Illinois at Urbana-Champaign)

M3.pdf

25 Muon Beam Experiments to Probe the Dark Sector

A persistence of several anomalies in muon physics, such as the muon anomalous magnetic moment and the muonic hydrogen Lamb shift, hints at new light particles beyond the Standard Model. We address a subset of these models that have a new light scalar state with sizable couplings to muons and suppressed couplings to electrons. A novel way to search for such particles would be through muon beam-dump experiments by (1) missing momentum searches; (2) searches for decays with displaced vertices. The muon beams available at CERN and Fermilab present attractive opportunities for exploring the new scalar with a mass below the di-muon threshold, and potentially covering a range of relevant candidate models. For the models considered in this paper, both types of signals, muon missing momentum and anomalous energy deposition at a distance, can probe a substantial fraction of the unexplored parameter space of the new light scalar, including a region that can explain the muon anomalous magnetic moment discrepancy.

Speaker: Yiming Zhong (Boston University)

muon-beam-dump.pdf

Muon Campus Experiments: Open Discussion

Session Chairs: David Tarazona (University of Liverpool) and Mary Convery (Fermilab)

Conveners: David Tarazona (University of Liverpool), Mary Convery (Fermilab)

Workshop_MC_SR_Exps_Day3_Intro.pdf

Thursday, 27 May

Potential Experiments: Introduction

Session Chairs: Adam Schreckenberger (University of Illinois at Urbana-Champaign) and Alexey Petrov (Wayne State University)

Conveners: Adam Schreckenberger (The Unversity of Texas at Austin), Alexey Petrov (Wayne State University)

26 MUonE

Speaker: Riccardo Pilato

MUonE_Pilato.pdf

27 A New Charge Lepton Flavor Violation Program at Fermilab

The search for charged lepton flavor violation (CLFV) has been underway since the discovery of the muon. PIP-II and the Booster Upgrade at Fermilab offer a chance to improve the limits by two orders-of-magnitude and study discoveries. We outline a program based on a new muon facility that can provide both a high-intensity nearly continuous stopped muon beam to study CLFV in muon decay, and a pulsed muon beam using a small muon storage ring to supply a muon-to-electron conversion experiment. The complex would begin using the beam from PIP-II but be designed to increase by a further order-of-magnitude sensitivity with the Booster Upgrade. The combination would provide the world's leading facility to explore the conservation of charged lepton family number.

Speaker: Bertrand Echenard (Caltech)

ENIGMA-FNAL.pdf

28 Status & future Fermilab computing plans for intensity frontier experiments

Speaker: Dr Adam Lyon (Fermilab)

storageRingWorkshopComputing.pdf

29 Possibilities for target testing at AP0

Speaker: Frederique Pellemoine (Fermilab -AD - TSD - TRD)

Target testing-AP0-F Pellemoine.pdf

09:35 Coffee

30 Decays and oscillations of muonium

I will discuss muonium decays and muonium-antimuonium oscillations in the framework of effective field theory. I emphasize the complimentary role of muonium studies in searches for New Physics.

Speaker: Alexey Petrov (Wayne State University)

MuonCampusWorkshop_muonium.pdf

31 DIMUS, possibility of such collider at NML

Speaker: Vladimir Shiltsev (FNAL)

DiMuS_ACC.pdf

32 Physics opportunities at DIMUS

Speaker: Patrick Fox (Fermilab)

DimuonTH.pdf

33 DIMUS detector challenges and options

Speaker: Sergo Jindariani (FNAL)

DIMUS_Detector_May2021.pdf

34 Snowmass process & white papers

Speaker: Alexey Petrov (Wayne State University)

MuonCampusWorkshop_Snowmass.pdf

35 Closeout Comments

Speaker: Jason Crnkovic (University of Mississippi)

closeout.pdf

Potential Experiments: Open Discussion time

Session Chairs: Adam Schreckenberger (University of Illinois at Urbana-Champaign) and Alexey Petrov (Wayne State University)

Conveners: Adam Schreckenberger (The Unversity of Texas at Austin), Alexey Petrov (Wayne State University)