# IOP 2014 Joint HEPP & APP Group Meeting

Apr 7 – 9, 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

## SQUID Magnetometry for Neutron EDM Experiments

Apr 8, 2014, 3:00 PM
15m
Room E (Windsor Building)

### Room E

#### Windsor Building

contributed talk Flavour Physics and Beyond

### Speaker

Ms Amy Cottle (University of Oxford)

### Description

Neutron electric dipole moment (nEDM) experiments require precision magnetometry to correct for systematic effects due to magnetic field fluctuations. I discuss the options for such magnetometers and present details of a 12-SQUID magnetometry system constructed for use in a cryogenic nEDM experiment. This has been developed to operate in 0.5 K superfluid helium and installed and tested in apparatus at the Institut Laue Langevin, Grenoble. The system is designed to track fields at the 0.1 pT level, consistent with a proposed experimental limit on an nEDM of $d_n \sim 10^{-27}\,e$cm.

### Primary author

Ms Amy Cottle (University of Oxford)

 Slides