| Title: |
Dynamics of magnetic evaporative beamline cooling for the preparation of cold atomic beams |
| Authors: |
Project 8 Collaboration; Ashtari Esfahani, A.; Bhagvati, S.; Böser, S.; Brandsema, M. J.; Cabral, R.; Chirayath, V. A.; Claessens, C.; Coward, N.; de Viveiros, L.; Doe, P. J.; Elliott, M. G.; Enomoto, S.; Fertl, M.; Formaggio, J. A.; Foust, B. T.; Gaison, J. K.; Harmston, P.; Heeger, K. M.; Jones, B. J. P.; Karim, E.; Kazkaz, K.; Kolbeck, P. T.; Li, M.; Lindman, A.; Liu, C.-Y.; Matthé, C.; Mohiuddin, R.; Monreal, B.; Mucogllava, B.; Mueller, R.; Negi, A.; Nikkel, J. A.; Novitski, E.; Oblath, N. S.; Oueslati, M.; Peña, J. I.; Pettus, W.; Ranatunga, V. S.; Reimann, R.; Reine, A. L.; Robertson, R. G. H.; Saldaña, L.; Slocum, P. L.; Spanier, F.; Stachurska, J.; Stogsdill, K.; Sun, Y.-H.; Surukuchi, P. T.; Taylor, L.; Telles, A. B.; Thomas, F.; Thorne, L. A.; Thümmler, T.; Van De Pontseele, W.; VanDevender, B. A.; Weiss, T. E.; Wynne, M.; Ziegler, A. |
| Source: |
Physical Review A, 112 (3), 033311 ; ISSN: 2469-9926, 2469-9934 |
| Publisher Information: |
American Physical Society |
| Publication Year: |
2025 |
| Collection: |
KITopen (Karlsruhe Institute of Technologie) |
| Subject Terms: |
Atom & ion cooling; Atom & ion trapping & guiding; Atom optics; Beam code development & simulation techniques; Beam optics; Beta decay; Cold and ultracold molecules; Ultracold collisions; Neutrinos; Neutrino mass; ddc:530; Physics; info:eu-repo/classification/ddc/530 |
| Description: |
The most sensitive direct neutrino mass searches today are based on measurement of the end point of the 𝛽 spectrum of tritium to infer limits on the mass of the unobserved neutrino. To avoid the smearing associated with the distribution of molecular final states in the T-He molecule, the next generation of these experiments will need to employ atomic (T) rather than molecular (T$_2$) tritium sources, at currents of at least 10$^{15}$ atoms per second. Following production, atomic T can be trapped in gravitational and/or magnetic bottles for 𝛽 spectrum experiments, if and only if it can first be cooled to millikelvin temperatures. Accomplishing this cooling presents substantial technological challenges. The Project 8 collaboration is developing a technique based on magnetic evaporative cooling along a beamline (MECB) for the purpose of cooling T to feed a magnetogravitational trap that also serves as a cyclotron radiation emission spectroscope. Initial tests of the approach are planned in a pathfinder apparatus using atomic Li. This paper presents a method for analyzing the dynamics of the MECB technique and applies these calculations to the design of systems for cooling and slowing of atomic Li and T. A scheme is outlined that could provide a current of T at the millikelvin temperatures required for the Project 8 neutrino mass search. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
2469-9926; 2469-9934 |
| Relation: |
info:eu-repo/semantics/altIdentifier/wos/001575265700001; info:eu-repo/semantics/altIdentifier/issn/2469-9926; info:eu-repo/semantics/altIdentifier/issn/2469-9934; https://publikationen.bibliothek.kit.edu/1000188735 |
| Availability: |
https://publikationen.bibliothek.kit.edu/1000188735 |
| Rights: |
info:eu-repo/semantics/closedAccess |
| Accession Number: |
edsbas.E6E17963 |
| Database: |
BASE |