The electrodes housing box
The electrodes housing (EH) box, pictured above, is a gold cube measuring about 70 mm on a side which will contain a LISA Technology Package proof mass with a gap of only 4 mm. This gap will allow the proof mass to float inside the EH once LISA Pathfinder is in space. In this photograph one of the sides is unmounted to allow for insertion of the proof mass at a later stage.
The EH is manufactured by Thales Alenia Space Italy of Milan (formerly Laben).