High Field Diamond Magnetometry Towards Tokamak Diagnostics
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909995409342464 |
|---|---|
| author | Graham, S. M. Stephen, C. J. Newman, A. J. Edmonds, A. M. Markham, M. L. Morley, G. W. |
| author_facet | Graham, S. M. Stephen, C. J. Newman, A. J. Edmonds, A. M. Markham, M. L. Morley, G. W. |
| contents | Nitrogen vacancy centres (NVC) in diamond have been widely used for near-dc magnetometry. The intrinsic properties of diamonds make them potential candidates for tokamak fusion power diagnostics, where radiation-hard magnetometers will be essential for efficient control. An NVC magnetometer placed in a tokamak will need to operate within a $\geq$ 1 T magnetic field. In this work, we demonstrate fibre-coupled ensemble NVC optically detected magnetic resonance (ODMR) and magnetometry measurements at magnetic fields up to 1.2 T. Sensitivities of approximately 240 to 600 nT/$\sqrt{\textrm{Hz}}$ and 110 nT/$\sqrt{\textrm{Hz}}$ are achieved in a (10-150) Hz frequency range, for non-degenerate and near-$\langle$111$\rangle$ field alignments respectively. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_13413 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High Field Diamond Magnetometry Towards Tokamak Diagnostics Graham, S. M. Stephen, C. J. Newman, A. J. Edmonds, A. M. Markham, M. L. Morley, G. W. Applied Physics Instrumentation and Detectors Optics Plasma Physics Quantum Physics Nitrogen vacancy centres (NVC) in diamond have been widely used for near-dc magnetometry. The intrinsic properties of diamonds make them potential candidates for tokamak fusion power diagnostics, where radiation-hard magnetometers will be essential for efficient control. An NVC magnetometer placed in a tokamak will need to operate within a $\geq$ 1 T magnetic field. In this work, we demonstrate fibre-coupled ensemble NVC optically detected magnetic resonance (ODMR) and magnetometry measurements at magnetic fields up to 1.2 T. Sensitivities of approximately 240 to 600 nT/$\sqrt{\textrm{Hz}}$ and 110 nT/$\sqrt{\textrm{Hz}}$ are achieved in a (10-150) Hz frequency range, for non-degenerate and near-$\langle$111$\rangle$ field alignments respectively. |
| title | High Field Diamond Magnetometry Towards Tokamak Diagnostics |
| topic | Applied Physics Instrumentation and Detectors Optics Plasma Physics Quantum Physics |
| url | https://arxiv.org/abs/2601.13413 |