Abstract: A high voltage feedthrough assembly for providing an electric potential in a vacuum environment comprises a flange connector being adapted for a connection with a vacuum vessel, a vacuum-tight insulator tube having a longitudinal extension with a first end facing to the flange connector and a second end being adapted for projecting into the vacuum vessel, and an electrode device coupled to the second end of the insulator tube, wherein the electrode device has a front electrode, including a photocathode or a field emitter tip and facing to the vacuum vessel and a cable adapter for receiving a high-voltage cable, wherein a flexible tube connector is provided for a vacuum-tight coupling of the insulator tube with the flange connector, and a manipulator device is connected with the insulator tube for adjusting a geometrical arrangement of the insulator tube relative to the flange connector.

Abstract: A high voltage feedthrough assembly (100) for providing an electric potential in a vacuum environment comprises a flange connector (10) being adapted for a connection with a vacuum vessel (201), wherein the flange connector (10) has an inner side (11) facing to the vacuum vessel (201) and an outer side (12) facing to an environment of the vacuum vessel 201, a vacuumtight insulator tube (20) having a longitudinal extension with a first end (21) facing to the flange connector (10) and a second end (22) being adapted for projecting into the vacuum vessel (201), and an electrode device (30) coupled to the second end (22) of the insulator tube (20), wherein the electrode device (30) has a front electrode (31), including a photocathode or a field emitter tip and facing to the vacuum vessel (201) and a cable adapter (32) for receiving a high-voltage cable (214), wherein a flexible tube connector (40) is provided for a vacuum-tight coupling of the insulator tube (20) with the flange connector (10), and a manipulator