Electron Beam Evaporators

Multi Hearth Evaporators

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The new SmartBeam evaporator series is suitable for optical coating processes as well as for metalization at high coating rates. An efficient cooling system of the crucible and the deflection unit guarantees reliable operation in demanding production processes.

All multi hearth evaporators produce a small beam diameter of 3 mm with minimal distortion over the crucible surface.
The crucible drive is carried out by means of a DC motor with built-in encoder and absolute position marking.
In the EB M series, the motor and crucible drive are on the atmosphere side and are flanged axially to the crucible shaft.
In the EB S series, the motor and crucible drive are encapsulated in the vacuum. This allows free positioning of the evaporator within the coating chamber.

Features & Benefits

  • Magnet system with low inductivity and effective cooling
  • Small beam diameter independant from its position on the crucible
  • DC motor on atmosphere side with integrated encoder und absolute positioning
  • High performance and LiftOff filament block
  • Support of high Sweep frequencies
  • Excellent control of the beam for opt. Materials
  • Reliable crucible positioning with stall protection
  • Easy filament installation and long filament lifetime



  • Evaporator positioning in chamber without restrictrions (EB S-series)
  • Magnetic crucible cover plate for reduced secondary electron bombardment towards substrate
  • Customer specified pocket geometry
  • Ferrofluid sealed rotary feedthrough for crucible rotation (only EBM-series); allows base pressure down to 1E-9 mBar

EB M-8 II with motor und crucible drive on atmosphere side

EB S-8 II with motor und crucible drive on vacuum side

EB M-4x4EB M-6 II
EB M-10 II
EB S-10 II
Max. operating power4 kW6 kW8 kW10 kW
High voltage range4 - 10 kV
Magnet deflection current (x/y)± 3 A
Beam diameter3 mm, with minimal distortion on crucible surface
Crucible driveDC motor with built-in encoder and absolute position marking
EBM-x: Motor and positioning at atmosphere axially flanged to crucible shaft
EBS-x: motor and positioning encapsulated in vacuum; Evaporator freely positionable
Standard crucible volumes4 x 4 cm³4 x 8 cm³
6 x 6 cm³
8 x 4 cm³
4 x 40 cm³
6 x 20 cm³
8 x 15 cm³
4 x 60 cm³
6 x 40 cm³
8 x 20 cm³
Dimensions vacuum
(H x B x L in mm) :
120 x 87 x 206130 x 112 x 250
164 x 112 x 282
130 x 150 x 304
164 x 150 x 304
130 x 190 x 346
164 x 190 x 346
Magnet current feedthrough
Magnet current feedthrough
High voltage feedthrough
LiftOff-Filament Block
LiftOff Filament Block
Crucible drive
Crucible drive


We are happy to send you up-to-date product information on request viainfo(at)beamtec.de.