High voltage switch

The CGC Instruments high voltage and power devices produces an extremely fast pulsed voltage with a switching time as low as a few nanoseconds (ns). It combines several analog high voltage switches, digitally controlled by dedicated electronics.

The CGC Instruments high voltage device is available in several versions, from single-channel to multi-channel (2-channel, 3-channel, 4-channel and more …). Each channel is completely independent of the others. Mechanical options range from compact mini-boxes to standard 19″ racks.

For each channel the user can specify the amplitude of the switching voltage, e.g. a positive voltage at a given value and also a negative voltage at another value. This way a switch output can deliver either a symmetrical or an asymmetrical voltage, so it is very versatile depending on the application.

Digital control inputs have a high input impedance, galvanically isolated from the output voltages.

We offer a range of ‘high voltage switches’ suitable for power ratings of 1 W, as well as a wide range of ‘power switches’ capable of driving high currents with higher energy transfers.

APPLICATION OF HIGH VOLTAGE SWITCHES

Ion Trap: an Ion Trap is a hardware device used to capture and manipulate ions (charged particles) using a combination of electric and magnetic fields. There are several types of ion traps, the two most popular are the Paul trap and the Penning trap.

Paul Trap: it is quadrupole trap that uses dynamic electric fields to trap charged particles. The ions are trapped by applying radiofrequency and static electric fields across electrodes. It is called Paul traps in honor of Wolfgang Paul, who invented the device.

Penning Trap: a Penning trap is identical to a Paul trap but a magnetic field ensures radial confinement of the particles instead of an oscillating electric field. A Penning trap typically consists of a cylindrical electrode surrounded by a set of ring electrodes. The cylindrical electrode creates a strong axial magnetic field, while the ring electrodes produce a quadrupole electric field that confines the ions radially.

Digital Ion Trap (DIT): it is a quadrupole trap controlled by digital signals, usually in rectangular waveform. The rapid switching between the voltage levels is operated by high voltage switches. The digital ion trap was primarily developed as a mass analyzer.

Bradbury-Nielsen gate: a Bradbury-Nielsen gate consists of applying a high frequency voltage, 180° out of phase, to alternating wires of a grid orthogonal to the trajectory of the ion beam. Charged particles pass through the shutter when the potential difference between the grid wires is zero. Otherwise the ion beam is deflected by a certain angle. Such gate is used to improve the mass resolution of a TOF instrument by reducing the initial pulse.

POWER SWITCH

RANGR AMXR

High voltage switch specifications (AMXT and AMXR)

• Maximum operating voltage (selectable for each channel separately): up to 1.5 kV (3 kV or more kV upon request)
• Passive cooling for lower powers, in the range of a few W
• High-frequency burst pulse generation is possible

Applications

•     Switching small loads
•     Electrostatic electrode switching
•     Control of ion optics, differential lenses
•     Ion traps, ion beams
•     Bradbury-Nielsen gates (BNG gates)
•     Penning traps, Paul traps
•     Ion injection, compression and ejection
•     Control of piezoelectric and electromagnetic valves or small motors engines

Power switch specifications (19AMX and AMXR)

• Maximum operating voltage (selectable for each channel separately): up to 1.5 kV
• Active cooling (forced air) to dissipate high output powers (approx. 100 W per channel)
• Optional liquid cooling for quiet, high-power operation (> 100 W per channel)
• High continuous output frequencies possible (typically 5 Mhz)

Applications

• Designed to drive high capacitances at high frequencies

In combination with suitable power supplies:

• Supply of digital ion traps (DIT) or other electrodynamic multipoles: ion traps or nanoparticle traps, ion funnels, ion guides and quadrupole mass filters
• Optional high-voltage isolation enables control of traps operating at high polarization potentials
• Drivers for electromagnetic & piezoelectric valves and apertures
• Motor drivers

High voltage DC-DC converters compatible with CGC Instruments high voltage switches

Here’s a list of ISEG converters compatible with CGC Instruments high voltage switches. From 2 separate converters, one of positive polarity, the other of negative polarity, we build a reversible switch in polarity from +/- 200 V to +/- 3 kV.

• APS high voltage converters from 100 V to 1000 V. Fixed positive and negative polarity
• BPS high voltage converters from 300 V to 3000 V. Fixed polarity, positive and negative
• CPS-Mini high voltage converters from 1000 V to 3000 V. Fixed polarity, positive and negative
• DPS-Mini high voltage converters from 500 V to 3000 V. Fixed polarity, positive and negative
• CPS high voltage converters from 500 V to 3000 V. Fixed polarity, positive and negative