Klaus P. Jungmann, Kernfysisch Versneller Instituut, Groningen, NL

1
The Muon g-2 Experiment
Klaus P. Jungmann, Kernfysisch Versneller
Instituut, Groningen, NL on behalf of the muon
g-2 collaboration
International Conference on Linear
Colliders 04   19-23 April 2004 - "Le Carré des
Sciences", Paris, France
Standard Model Precision Experiment Fundamental
Constants Related Experiments Interpretation
2
(No Transcript)
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
Hadronic Corrections for gm-2
Dam(hadr.,1st order) 6951(75)10-11
(Davier, 1998) Dam(hadr., higher order)
-101(6) 10-11 (Krause, 1996) Dam(hadr.,
light on light) -79(15) 10-11 (Hayakawa,
1998)
Situation Spring 2001
7
Early Shopping List
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
Trolley NMR Probes
NMR Trolley
Fixed NMR Probes
Electrostatic Quadrupole Electrodes
Trolley Rails
Vacuum Vessel
13
(No Transcript)
14
(No Transcript)
15
900 000 000 positrons with E gt 2GeV in 1999
16
Fourier Spectra for different Run Conditions m-
_at_BNL
17
(No Transcript)
18
Systematic Uncertainties, Results

• Magnetic Field
• wp,0 spherical probe 0.05 ppm
• wp(R,ti) 17 trolley probes 0.09 ppm
• wp(R,t) 150 fixed probes 0.07 ppm
• wp(R) trolley measurement 0.05 ppm
• lt wp gt muon distribution 0.03 ppm
• wp (RI) others 0.10 ppm
• total systematic uncertainty
  
  
  dwp0.17ppm

• Spin Precession
• Pileup 0.08 ppm
• Lost muons 0.09 ppm
• Coherent Betatron Oscillations 0.07 ppm
• Gain Instability 0.12 ppm
• others
  0.11 ppm
• total systematic uncertainty dwa,sy 0.21 ppm
• total statistical uncertainty dwa,st 0.6 ppm

wp/2p 61 791 400 (11) Hz
wa/2p 229 073.59(15)(5) Hz
19
(No Transcript)
20
Final results from Experiment E821 _at_BNL
21
Hadronic Corrections for gm-2
Dam(hadr.,1st order) 6951(75)10-11
(Davier, 1998) Dam(hadr., higher order)
-101(6) 10-11 (Krause, 1996) Dam(hadr.,
light on light) -79(15) 10-11 (Hayakawa,
1998)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
The Muon g-2 Experiment
Klaus P. Jungmann, Kernfysisch Versneller
Instituut, Groningen, NL on behalf of the muon
g-2 collaboration
International Conference on Linear
Colliders 04   19-23 April 2004 - "Le Carré des
Sciences", Paris, France
What next in Experiment? - Just run again ?
- Is there more to it ?
Standard Model Precision Experiment Fundamental
Constants Related Experiments Interpretation
How reliable is Theory ?
What mean Speculations built on whishfull
definition of Theory Value?
What about Theory ?
Are there other Experiments Neede to come further
in Physics?
26


27
(No Transcript)
28
EDM closely related to non standard anomaly in
many models!
Exploit huge motional electric fields
for relativistic particles in high magnetic
fields observe spin rotation
Concept works also for (certain) nuclei Deuteron
particularly interesting
29
(No Transcript)