Magnetic Field Uniformity and Ultracold Neutron Storage Optimization for CryoEDM
Lead Research Organisation:
University of Sussex
Department Name: Sch of Mathematical & Physical Sciences
Abstract
See Sussex EPP 2012 Consolidated Grant Application.
Planned Impact
See Sussex EPP 2012 Consolidated Grant Application.
People |
ORCID iD |
| William Griffith (Principal Investigator) |
Publications
Abel C
(2020)
Measurement of the Permanent Electric Dipole Moment of the Neutron.
in Physical review letters
Abel C
(2019)
PicoTesla absolute field readings with a hybrid 3He/87Rb magnetometer
in The European Physical Journal D
Abel C
(2019)
Magnetic-field uniformity in neutron electric-dipole-moment experiments
in Physical Review A
Abel C
(2017)
Search for Axionlike Dark Matter through Nuclear Spin Precession in Electric and Magnetic Fields
in Physical Review X
Slutsky S
(2017)
Cryogenic magnetic coil and superconducting magnetic shield for neutron electric dipole moment searches
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Ito TM
(2016)
An apparatus for studying electrical breakdown in liquid helium at 0.4 K and testing electrode materials for the neutron electric dipole moment experiment at the Spallation Neutron Source.
in The Review of scientific instruments
Ban G
(2016)
Ultracold neutron detection with 6Li-doped glass scintillators NANOSC: A fast ultracold neutron detector for the nEDM experiment at the Paul Scherrer Institute
in The European Physical Journal A
Pendlebury J
(2015)
Revised experimental upper limit on the electric dipole moment of the neutron
in Physical Review D
Afach S
(2015)
Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy.
in Physical review letters
Afach S
(2015)
Gravitational depolarization of ultracold neutrons: Comparison with data
in Physical Review D
| Description | We have found that ultracold neutrons (neutrons moving a few meters per second) can be stored for 10 minutes or more at cryogenic temperatures in a specially prepared acrylic box. |
| Exploitation Route | Findings from this research will help lead to an improved neutron EDM measurement by the SNS and PSI nEDM collaborations. |
| Sectors | Other |
| Description | The Department of Physics & Astronomy at the University of Sussex runs an intense outreach programme, closely linked to our research. We work with over 12,000 people per year, including members of the general public, and school and college students, interacting through stands at various science fairs and in classroom-type settings. |
| First Year Of Impact | 2014 |
| Sector | Education |
| Impact Types | Cultural,Societal |
| Description | CryoEDM |
| Organisation | Rutherford Appleton Laboratory |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | I joined this collaboration when post at University of Sussex was taken up in Sept. 2013. STFC decided to stop funding the project in Dec. 2013, with some small continued funding for a limited withdrawal period. Before the cessation, I was working on planning cryogenic UCN storage measurements to be carried out at the ILL PF2 ultracold neutron source, and was preparing tests for a large diameter cyrogenic seal between G10 and metal. |
| Collaborator Contribution | Partners were were working on various experimental activities for CryoEDM, and also working on an upgrade proposal for the project to be submitted in early 2014. |
| Impact | This research contributed to the invited talks at IPA2014 and the IOP 2014 conferences. |
| Description | CryoEDM |
| Organisation | University of Oxford |
| Department | Department of Physics |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | I joined this collaboration when post at University of Sussex was taken up in Sept. 2013. STFC decided to stop funding the project in Dec. 2013, with some small continued funding for a limited withdrawal period. Before the cessation, I was working on planning cryogenic UCN storage measurements to be carried out at the ILL PF2 ultracold neutron source, and was preparing tests for a large diameter cyrogenic seal between G10 and metal. |
| Collaborator Contribution | Partners were were working on various experimental activities for CryoEDM, and also working on an upgrade proposal for the project to be submitted in early 2014. |
| Impact | This research contributed to the invited talks at IPA2014 and the IOP 2014 conferences. |
| Description | PSI neutron EDM collaboration |
| Organisation | Paul Scherrer Institute |
| Country | Switzerland |
| Sector | Academic/University |
| PI Contribution | Joined collaboration in April 2014. We are starting to participate in data taking and analysis for the current running experiment. We are studying Hg depolarisation effects caused by high voltage effects, and are taking part in the planning of a major upgrade to the apparatus. |
| Collaborator Contribution | The apparatus is located at PSI, and the running of the measurement is mainly organised by staff at PSI. |
| Impact | IPA2014 invited talk |
| Description | SNS nEDM Experiment |
| Organisation | U.S. Department of Energy |
| Country | United States |
| Sector | Public |
| PI Contribution | Contributed work on preparing an apparatus that will be used to measure ultracold neutron storage times in a prototype neutron EDM measurement cell at cryogenic temperatures. Measurements will be carried out at Los Alamos National Laboratory. |
| Collaborator Contribution | Travel money was contributed to spend one week at Los Alamos National Laboratory in August, 2014. |
| Impact | This research contributed to the invited talks at IPA2014 and the IOP 2014 conferences. |
| Description | Sussex Universe talk |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Public/other audiences |
| Results and Impact | Gave a public lecture on electric dipole moment research in the evening as part of the Sussex University series to around 30 people from the general public. A lively discussion followed on the questions of the origins of the universe and different measurements trying to lead to greater understanding. |
| Year(s) Of Engagement Activity | 2015 |