# ICHEP2018 SEOUL

Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

## SQUID-based BPM for proton EDM experiment

Jul 6, 2018, 9:22 AM
22m
105 (COEX, Seoul)

### 105

#### COEX, Seoul

Parallel Accelerator: Physics, Performance, and R&D for Future Facilities

### Speaker

Selcuk Haciomeroglu (Institute for Basic Science)

### Description

The pEDM experiment aims to search for the electric dipole moment (EDM) of proton with $10^{-29}$ e-cm sensitivity, approximately 5 orders of magnitude better than the current experimental limit. The experiment is designed to store counter-rotating proton beams in an all-electric storage ring. The EDM of the particles will couple with the radial electric field, causing a spin growth around the radial axis in the particle's rest frame. The growth rate of this precession will be proportional to the EDM of the proton.

Magnetic field is a major source of systematic errors as it couples with magnetic dipole moment and dominates the spin precession. Among possible combinations, average radial magnetic field (B_r) is the most critical one. It should be kept at 10aT level. We are developing a novel BPM that is based on SQUID magnetometers for measuring the average magnetic field.

### Primary author

Selcuk Haciomeroglu (Institute for Basic Science)

### Co-authors

Andrei Matlashov (Institute for Basic Sciences) Dr Yong-Ho Lee (KRISS)