Space worthy electronics package for the 35 kg space active hydrogen maser on ACES

摘要

The 35kg active Space Hydrogen Maser (SHM-35) developed at the Observatory of Neuchâtel is one core element of the ACES experiment (Atomic Clock Ensemble in Space). ACES is an European experiment on the International Space Station (ISS) comprising the SHM-35 and the cold atom caesium clock PHARAO locked to each other. The resulting ultrastable clock provides an optimised time scale and allows for fundamental physics tests. SHM-35 consists of the physical package (PP) and of the electronics package (EP).