Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique
description
Transcript of Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique
![Page 1: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/1.jpg)
Probing the Deuteron EDM at the 10-26e·cm level with a new Experimental Technique
Yannis K. SemertzidisBrookhaven National Lab
EDM Collaboration
CIPANP03NY City, 20-24 May 2003
EdBdtsd
![Page 2: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/2.jpg)
Muon and Deuteron Electric Dipole Moments in Storage Rings
• Revolutionary New Way of Probing EDMs.
EdBdtsd
![Page 3: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/3.jpg)
Muon and Deuteron Electric Dipole Moments in Storage Rings
• Revolutionary New Way of Probing EDMs.
EdBdtsd
![Page 4: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/4.jpg)
Spin Precession in g-2 Ring(Top View)
Bmeaa
Momentumvector
Spin vector
![Page 5: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/5.jpg)
Spin Precession in EDM Ring(Top View)
0a
Momentumvector
Spin vector
![Page 6: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/6.jpg)
The muon spin precesses vertically (Side View)
BVdEddtsd
B
![Page 7: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/7.jpg)
Radial E-field to Cancel the g-2 Precession
• Radial E-Field: 2aBcER
The method works well for particles with small anomalous magnetic moment a, e.g. Muons (a = 0.0011), Deuterons (a = -0.143), etc.
![Page 8: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/8.jpg)
Deuteron EDM Signal:
• Radial E-Field:
Rd
R
EadaBdc
BcEddtsd
1
,2 aBcaBcER for γ~1
e.g. for ER = 2MV/m, d = 10-26e·cm; ωd = 2.1µrad/s
![Page 9: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/9.jpg)
Deuteron Statistical Error:
NAPETa
Rsd
2
1
Ts: Time the beam is storedA : The left/right asymmetry observed by the polarimeterP : The beam polarizationN : The total number of detected events
![Page 10: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/10.jpg)
Sources of Deuteron Systematic Errors:
• Out of Plane Electric Field
• Tensor Polarization
![Page 11: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/11.jpg)
Effect of Vertical Component of E0)( vv ruBEeF
cE
uEBr
vv
cEB
cEBB
cEBcBEE
Bmeg
zr
zrr
zrrzz
r
**
*
*
0
2
EcE
meg
cE
meg
22
v
22
• Deuterons β=0.2, γ=1.02, ω=13105 θE rad/s
![Page 12: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/12.jpg)
Effect of Vertical Component of E• Clock Wise and Counter-Clock Wise Injection:
Background: Same Sign Signal: Opposite Sign
• Protons β=0.15, γ=1.01, ω=115105 θE rad/s• Deuterons β=0.2, γ=1.02, ω= 13105 θE rad/s• Muons β=0.98, γ=5, ω= 2105 θE rad/s
• Other Diagnostics Include Injecting Forward vs Backward Polarized Beams as well as Radially Pol.
![Page 13: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/13.jpg)
Parameter Values of a Deuteron EDM Experiment
• Radial E-Field:
ER=2MV/m
• Dipole B-field: B~0.25T; Ring Radius: R~10m
• Deuteron Momentum:
2aBcER
2.0 GeV/c, 0.4 dP
![Page 14: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/14.jpg)
Storage Time Limitations:• E, B field stability
• Multipoles of E, B fields
• Vertical (Pitch) and Horizontal Oscillations
• Finite Momentum Acceptance ΔP/P
At this time we believe we can do Ts~2s
![Page 15: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/15.jpg)
Deuteron Statistical Error:
NAPETa
Rsd
2
1
Ts = 2sER= 2MV/mA = 0.4P = 90%N = 5 108 d/pulse, 20KHz useful rate and 107s
cme10 26 d
![Page 16: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/16.jpg)
Possible Locations for a Deuteron EDM Experiment:
• Brookhaven National Laboratory
• KVI/The Netherlands
• Indiana University Cyclotron Facility
![Page 17: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/17.jpg)
Indiana University Cyclotron Facility
EDM RingCapital Cost: $3-4M
Accumulator
![Page 18: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/18.jpg)
Deuteron EDM to 10-26 e•cm Sensitivity Level
• T-odd Nuclear Forces: dd =210-22 ξ e·cm with the best limit for ξ<0.5 10-3 coming from the 199Hg EDM limit (Fortson, et al., PRL 2001).
(Sushkov, Flambaum, Khriplovich Sov. Phys. JETP, 60, p. 873 (1984) and Khriplovich and Korkin, Nucl. Phys. A665, p. 365 (2000)).
• dd = dp + dn (I. Khriplovich)
It Improves the Current Proton EDM Limit by a Factor of >10,000 and a Factor 6-10 on Neutron.
![Page 19: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/19.jpg)
Possible Improvements:
• Higher ER Fields: 15.5MV/m for 1 inch Aperture
• Longer Storage Time than 2s while Maintaining Polarization
![Page 20: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/20.jpg)
Breakdown vs Gap
![Page 21: Probing the Deuteron EDM at the 10 -26 e ·cm level with a new Experimental Technique](https://reader036.fdocuments.in/reader036/viewer/2022070500/56816802550346895ddd83b6/html5/thumbnails/21.jpg)
Sensitive Deuteron Electric Dipole Moment Search in Storage Rings
• Revolutionary New Way of Probing EDMs
• Exciting Physics Prospects
Summary