Amsterdam Cantilever Piezo Valve product line
1) ACPV2 model
The ACPV2 is our standard pulsed valve body. Both the electrical feed through (Lemo connector) and the gas feed through (Swagelock) are mounted on the back side of the valve body.
The typical nozzles that we produce mostly have a 100, 150, 200 , 300 or 500 micron diameter and a 40 degree conical nozzle shape for enhanced centre-line beam intensity. We can also make straight channel nozzles without the conical shape.
We are currently also developing rectangular micro-de Laval nozzles. If you are interested in specific micro fabricated nozzles please contact us for further information and your specific wishes by filling our this form (pdf link).
The general dimensions of the standard ACPV2 valve body are shown below:
2) ACPV3 model
We can also provide conical tip shapes, inquire about custom solutions.
The front plate of the ACPV3 model is especially suited for integration in experimental setups with close (laser) radiation interaction directly behind the nozzle orifice.
This ACPV3 model is for instance used in High Harmonic Generation (HHG) experiments or in experiments where the valve front plate acts as the repeller of an electron/ion time-of-flight (TOF) or a Velocity-Map-Imaging (VMI) setup.
High particle densities can be obtained for interaction with pulsed Laser, Synchrotron, Free-Electron-Laser (FEL) radiation or pulsed charged particle interaction with atomic/molecular beams at low background pressures.
Application of ACPV3 in High-Harmonic-Generation:
From J. Phys. B: At. Mol. Opt. Phys. 50 132002 (2017), see pdf link here.
Application of ACPV3 in Velocity Map Imaging of electrons or ions:
3) Electronic Driver Unit EDU5
The modern EDU5 electronic driver unit (that since the summer of 2017 superseded the previous EDU1-4 models) is matched for optimal performance of the ACPV2 and ACPV3 piezo valves. In the Spring of 2021 we introduced a firmware upgrade of the EDU5 that enables customers to drive the piezo at voltages up to 200V (instead of 150V), which produces a stronger deflection and an enhanced conductance and gas flow.
We have also developed a hardware upgraded EDU5-HP (High Performance) that enables operation up to 290V drive voltages. Inquire if you are interested in the new EDU5-HP.
The EDU5 can be operated with manual control of the pulse amplitude and pulse duration as well as full computer-control of the drive settings. See the photos below:
Specifications and operation of EDU5:
•Hardware trigger 5V TTL (50 Ohms/high impedance selectable) or fiber optic (ST)
•Digital timing circuitry for accurate, reproducible valve opening time from 5 to 800 microseconds
•Digital controlled piezo voltage level from 0 to 200 Volts (or up to 290V for the new EDU5-HP)
•Easy user control via rotary encoders and LCD display
•Separate rotary encoders for pulse width and piezo voltage level
•Selectable valve control: open/closed/open-on-trigger
•Computer controlled USB or RS232-port
•To allow for computer control and trigger over greater distances and/or achieve galvanic isolation the EDU5 can be connected via fiber optics, see below
•VCP (Virtual Com Port) software drivers are included for operation of control software under Windows7/10 and Linux
•Software control via any programming/scripting language
•Simple human readable text based commands
•A simple terminal program is sufficient to remote control the EDU5 without any programming
4) Fiber-Remote-Control Unit
To allow for computer control and trigger over greater distances and/or to achieve galvanic isolation of the EDU5, the driver can be connected via a special Fiber-Remote-Control (FRC) unit and fiber optics of chosen length, 10, 30 or 100 meter (unit: FRC10/30/100).
5) Isolation Box EDU5-ISO for High-Voltage floating of ACPV
For direct implementation of the ACPV (and EDU5) in a galvanically floating setup we provide an isolation enclosure box that houses the floating EDU5.
The EDU5-ISO box consists of an enclosure, a built-in isolation transformer, AC mains entry, fiber feedthroughs and an isolated piezo cable to the ACPV valve body. The EDU5-ISO box is a class II device (double isolated).
The EDU5-ISO enclosure is made from high impact resistant polycarbonate and is equipped with quick screw transparent covers for easy access. The transparent cover allows easy viewing of the EDU5 LCD display and indicators.
Please contact for further information.
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