Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session U06: Precision Measurements in AcceleratorsInvited
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Sponsoring Units: GPMFC DPB Chair: Mei Bai, SLAC - Natl Accelerator Lab Room: MG Salon F - 3rd Floor |
Tuesday, April 18, 2023 1:30PM - 1:57PM |
U06.00001: The high Physics sensitivity of the storage ring proton Electric Dipole Moment experiment Invited Speaker: Yannis K Semertzidis The realization that storage rings can be used for high precision measurements was established even stronger than before with the announcement of the muon g-2 results in April 2021. The Fermilab results showed agreement with the previous BNL results, while the systematic errors have been understood to a level much better than before. A similar method is proposed to probe the proton EDM, and eventually the deuteron and 3He as well, bringing the next sensitivity levels in light ion EDMs. In the talk I will outline the major conceptual breakthroughs enabling this project to move forward with a projected detailed CDR within 2023. |
Tuesday, April 18, 2023 1:57PM - 2:24PM |
U06.00002: On systematic Effects of charged Particle Electric Dipole Moment Measurement Rings Invited Speaker: Christian Carli Storage rings to measure a possible Electric Dipole Moment (EDM) of charged particles and, in particular Protons, are studied by an international community. Most proposals foresee to operate a ring with electrostatic bendings at the “magic energy”. At this particular energy and with the well-known Magnetic Dipole Moment (MDM) only, an initial longitudinal polarization of a bunch is maintained. A finite EDM generates a small vertical polarization. |
Tuesday, April 18, 2023 2:24PM - 2:51PM |
U06.00003: Precision Beam Control in PVES Experiments Invited Speaker: Caryn Palatchi The aim of the upcoming MOLLER experiment at Jefferson Laboratory, a national accelerator facility, is to probe electroweak interactions with unprecedented sensitivity reach at both low and high energy scales to discover new beyond the Standard Model dynamics. MOLLER is an extremely precise measurement of parity violation in electron scattering searching for new neutral currents in electron-electron scattering. The measurement relies on a high precision comparison of scattering rates for opposite beam helicity polarization, and ensuring tight limits on polarization-dependent asymmetries in the electron beam is a key technical challenge. |
Tuesday, April 18, 2023 2:51PM - 3:18PM |
U06.00004: Beam Dynamics Corrections to the Spin Precession Frequency Measurement in the Muon g-2 Experiment Invited Speaker: Tyler J Barrett The Muon g-2 Experiment at Fermilab aims to measure the anomalous magnetic moment of the muon to a record precision of 140 parts per billion (ppb) in order to test the agreement between experiment and the Standard Model. The previous experiment at Brookhaven National Laboratory (BNL) reported a discrepancy of about 3-sigma in 2004. In 2021, the current experiment at Fermilab reported an initial 460-ppb measurement from Run-1 which supported the BNL result, with much more data soon to come. |
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