August 8, 2016

ACES Platform carrying the PHARAO instrument

ACES Platform

ACES (Atomic Clock Ensemble System) is an ESA project including two atomic clocks:

  • PHARAO: (horloge atomique par refroidissement d'atomes de césium) caesium cold atom clock developed by CNES,
  • SHM: Space Hydrogen Maser developed in Switzerland.

The size of ACES is about 1 m³, it weighs 225 Kg and needs 450 W of electrical power.