Description
The The aim of CeNTREX (Cold molecule Nuclear Time-Reversal Experiment) is to search for the proton’s electric dipole moment by measuring the Schiff moment it induces in the $^{205}$Tl nucleus. We use the amplified energy shift from the Schiff moment that is present in the polar molecule thallium fluoride (TlF). To maximize the population of the science state, we employ rotational cooling on the cold TlF beam, which pumps lowest few rotational states into a single J=0 hyperfine level of the $^1$Σ$^+$ electronic ground state. Electrostatic focusing with a quadrupole lens will be used to efficiently direct molecules to a downstream detection region; this requires a weak-field seeking state. This is achieved by adiabatic state transfer from J=0 to J=2 with microwaves. Finally, the Schiff moment measurement requires careful nulling of magnetic fields in the interaction region. Characterization of a new magnetic shielding system is ongoing.
*This work is funded by the Heising-Simons Foundation, NSF and the U.S. DOE, Office of Science, Office of Nuclear Physics, under contract DE-AC02-06CH11357.
| Presenter name | Olivier Grasdijk |
|---|---|
| How will you attend ICAP-27? | I am planning on in-person attendance |
