Quadrupole Beam Bender

Manufacturer: DREEBIT GmbH
The DREEBIT Quadrupole Beam Bender is an ion optical device designed to bend charged particles by an angle of up to ±90°. The deflection is realized by quarter-pipe electrodes in a typical vertical electrostatic quadrupole arrangement.
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Description

The DREEBIT Quadrupole Beam Bender is an ion optical device designed to bend charged particles of the electric charge q with kinetic energies of up to 25 kV · q by an angle of 90°. The deflection is realized by quarter-pipe electrodes set up perpendicularly to the direction of the incoming ion beam in a typical electrostatic quadrupole arrangement.

With this design, the quadrupole beam bender can be used to guide a beam towards up to three different beamline sections downstream from the quadrupole chamber (directions ±90° and straight). Additionally, the quadrupole is equiped with lenses to correct the shape of the beam after ±90° deflection.

The beam deflection can be set continuously by using standard power supplies or the quadrupole can be operated in pulsed mode. Therefore, a high voltage pulser with built-in power supplies has been developed which is available as optional equipment to the quadrupole beam bender.

Parameters

Quadrupole Parameters
max. voltage on quadrupole electrodes ± 30 kV
max. voltage on correction lenses + 10 kV
max. ion beam energy 25 kV · q
ion orbit curvature radius 40 mm
entrance / exit slit diameter 12 mm
quadrupole capacitance < 500 pF
General Parameters
beamline attachment flange DN 160 CF, vertical installation
max. bakeout temperature 150 °C
Infrastructural Requirements
vacuum conditions during operation suitable from 1e-10 mbar up to 1e-7 mbar

Scope of Delivery

  • quadrupole beam bender mounted onto a DN 160 CF flange including shielded HV feedthroughs
  • HV connectors for attachment of customer supplied cables

Optional Equipment

  • power supplies for operation of the quadrupole incl. tailored cables according to customer specifications
  • high voltage pulser including power supplies, switching of all HV outputs between max. 90 % of max. voltage and ground potential, HV ramping time < 10 µs, min. delay between two "HV on"  phases of duty cycles 15 ms

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