Speaker
Description
The TUCAN collaboration aims to search for the neutron electric dipole moment (nEDM) with an unprecedented precision of $10^{-27}$cm. To achieve this sensitivity, the development of the world's highest-intensity ultra-cold neutron (UCN) source is essential. A critical component of this source is the advanced cryogenic system, designed to maintain superfluid helium at optimal temperatures under significant heat loads.
During the UCN source commissioning phases in 2025 and 2026, we successfully demonstrated the target cooling capacity of the cryogenic system. In particular, dedicated heater tests confirmed that the system operates with high stability under a thermal load of 10 W. This milestone confirms that the cryogenic infrastructure meets the rigorous demands of the experiment.
The successful execution of these commissioning runs and the demonstration of stable cooling performance mark the completion of this world-leading UCN source, establishing the requisite environment for our upcoming high-precision nEDM measurements.