Optimized crucible assembly and method for physical vapor deposition

A crucible assembly for physical vapor deposition on a surface comprising:

• a base to support and drive in rotation a crucible around a rotational axis,
• a crucible cover configured to cover at least one of the cavities of the crucible when the crucible cover is disposed above the crucible,
• wherein the crucible comprises:
• at least two cavities for receiving a material to be vaporized by an electron beam gun, the at least one cavity being disposed at a peripheral area of the crucible with regard to the rotational axis,
• a crucible upper surface from which the at least two cavities extend,
• wherein the crucible comprises a crucible handle extending from the crucible upper surface, the crucible cover having a first hole which allows the crucible cover not to cover the cavity which is in an operational position, and a second hole configured to make the crucible handle extend through the crucible cover when disposed above the crucible,
• wherein the crucible cover comprises a cover handle extending from a cover upper surface of the crucible cover,
• wherein the crucible handle is made of a first part fixed to the crucible and a second part which is configured to be removably connected to the first part to handle the crucible, the cover handle being made of a first part fixed to the crucible cover and a second part which is configured to be removably connected to the first part to handle the crucible cover to allow second part of both crucible and cover handle to be removed during the electron beam gun is used to keep the handle in a cold place.