Conveners
Acceleration, Storage and Polarimetry of Polarized Beams: Acceleration I
- Hiromi Iinuma
Acceleration, Storage and Polarimetry of Polarized Beams: Acceleration II
- Oleg Eyser (BNL)
Acceleration, Storage and Polarimetry of Polarized Beams: Acceleration III
- Vadim Ptitsyn (BNL)
The Electron Ion Collider calls for polarized helion on polarized electron colli-
sions. These collisions will require 1.2×10^11 ions per bunch at 70% polarization.
Polarized helions will originate from the Electron Beam Ion Source and be in-
jected into the Booster at |Gγ| = 4.1932. The injected intensity from EBIS is
expected to be 2×10^11 ions with a polarization of 80%. Meeting the EIC...
The Electron-Ion Collider's Hadron Storage Ring (HSR) will use a pair of spin rotators to achieve longitudinal polarization at IP6. Additionally there are to be six snakes located at azimuthal angles of 60 degrees from each other. Due to space constraints in the whole lattice, in order to achieve a 60 degree separation between the snakes, we are forced to place a snake near IP6 where the...
At the Relativistic Heavy-Ion Collider (RHIC), the Polarized Hydrogen Gas Jet Target Polarimeter (HJET) is used to measure absolute transverse (vertical) polarization of the proton beams with low systematic uncertainties of about $\sigma^\text{syst}_P/P\le0.5\%$. HJET performance has been thoroughly studied in measurements of the ${pp}$ and ${pA}$ analyzing powers for a broad range of proton...
The Electron Ion Collider (EIC) will make precision measurements of different asymmetries to shed light on nucleon structure and dynamics. One of the most important sources of systematic uncertainty is the determination of the degree of polarization of the electron beam. This talk will detail the challenges to electron polarimetry in this new machine and the current status for the Compton...
The upcoming parity-violating physics program in Hall A at Jefferson Lab including MOLLER and SoLID require 0.4% accuracy separately for both Compton and Møller polarimeters. Each of these requires reaching a level of precision and accuracy not yet attained in published results for polarimeters of these types. An ongoing program to reach these goals has resulted in improvements in both the...
The Charged and Neutral Pion Polarizability Experiments (CPP and NPP) at GlueX require a precision measurement of the linear polarization of the incident photon beam.The utilization of electron-positron ($e^+e^-$) pair production is a valuable technique for determining photon beam polarizations.Polarization determination from pair production on atomic electrons (the Triplet Polarimeter, TPOL...
Parity-violating experiments like P2 at Mainz Energy-Recovering Superconducting Accelerator (MESA) demand an accuracy of polarization measurement of Δ P/P < 1%. To ensure beam polarization, a polarimetry chain with polarimeters at different energies and working principles is planned to track the electron beam polarization throughout the MESA lattice. As a part of the chain, a Mott polarimeter...
Polarised particle beams are indispensable for the study of spin-dependent processes. The LEAP (Laser Electron Acceleration with Polarisation) project at DESY aims to demonstrate the acceleration of polarised electrons in the extremely high fields enabled by laser plasma accelerators to create high energy electron beams in ultra-compact footprint. In this proof of principle experiment,...
Status of newly planned J-PARC muon g-2/EDM experiment will be reported. This experiment differs greatly from the BNL-E821 and FNAL-E989 experiments, which use a muon of magic momentum (γ=29.3). Utilizing low emittance muon beam with momentum of γ=3, we store the beam in 3T superconductive solenoidal magnet with orbit’s diameter of 0.66m. The sub-meter storage orbit allows us to reconstruct...
Electric dipole moments are very sensitive probes of physics beyond the Standard Model. The JEDI collaboration is dedicated to the search for the electric dipole moment (EDM) of charged particles making use of polarized beams in a storage ring. In order to reach the highest possible sensitivity, a fundamental parameter to be optimized is the Spin Coherence Time (SCT), i.e., the time interval...
We have previously developed a design approach to minimize the intrinsic spin resonance for lattice. This approach involves ensuring the cancelation of spin kicks due to quadrupoles between spin precessing dipole magnets. We apply this approach to the AGS-Booster, future FCC-hh and FCC-ee Booster rings.
The sparsity of spin dependence data in nuclear collision physics is due to the experimental inconvenience of center of mass (CM) particle kinetic energies (KEs) required to be in the range from 100 KeV to 1 MeV in order to be comparable with Coulomb potential energy barrier heights. Small compared to all nucleon rest masses, the lab frame and the CM frame then coincide.
Particles in the...
