2024 Workshop on Polarized Sources, Targets, and Polarimetry

Session

Hadron Polarimetry

Sep 23, 2024, 1:50 PM

Cebaf Center Auditorium (Jefferson Lab)

Conveners

Hadron Polarimetry

• Oleg Eyser (BNL)

42. New DAQ for the 200 MeV Polarimeter at BNL Linac

Andrei Poblaguev (Brookhaven National Laboratory)

9/23/24, 1:50 PM

A new DAQ system for the 200 MeV proton-carbon polarimeter at the BNL Linac has been commissioned during the polarized proton RHIC Run 2024. The polarimeter measures the asymmetry of the vertically polarized 200 MeV proton beam scattering off a thin carbon target at $12^\circ$ and $16.2^\circ$. For the $16.2^\circ$ elastic scattering, the analyzing power is close to $100\%$, allowing for...

45. Far-forward neutral particle asymmetry measurements in the RHICf experiment

Yuji Goto (RIKEN)

9/23/24, 2:10 PM

The RHICf experiment installed an electromagnetic calorimeter in front of the Zero-Degree Calorimeter (ZDC) of the RHIC-STAR experiment in 2017 to measure the transverse-spin asymmetries of the far-forward neutral particles produced from transversely polarized proton collisions at RHIC. It is known that the far-forward neutrons produced in transversely polarized proton collisions have a large...

53. Further development of a Lamb-shift polarimeter

Nicolas Faatz

9/23/24, 2:30 PM

The Lamb-shift polarimeter (LSP) is a useful detection apparatus to verify nuclear spin polarization for atoms, molecules and ions consisting of hydrogen and/or its isotopes. Its functionality relies on the creation of metastable hydrogen atoms via a charge exchange reaction that preserves the nuclear polarization in a strong magnetic field. The nuclear polarization is then determined by...

54. Development of spherical neutron polarimetry at Oak Ridge National Laboratory

Chenyang Jiang (Oak Ridge National Laboratory)

9/23/24, 2:50 PM

Spherical neutron polarimetry is a unique and powerful tool to study certain complex magnetic structures. At the Oak Ridge National Laboratory (ORNL), we have developed a state-of-the-art Spherical Neutron Polarimetry (SNP) system for neutron instruments at High Flux Isotope Reactor (HFIR), which is now in HFIR user program. This system, designed for high precision and versatility, offers a...

44. Proton beam polarimetry based on pe elastic scattering

Boxing Gou (Institute of Modern Physics, CAS)

Fast and precise beam polarimeters are crucial for both accelerator tuning and spin-observable extraction. The statistical precision of a polarimeter is dominated by the figure-of-merit (FOM), i.e. the cross section multiplied by the physical asymmetry squared, of its reference reaction. The High Intensity heavy-ion Accelerator Facility (HIAF) and the polarized Electron Ion collider in China...