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 or 300 micron diameter and a 40 degree conical nozzle shape for enhanced centre-line beam intensity. We can also make straight channel nozzles, please contact us for further information. The dimensions of the standard ACPV2 valve body are shown below:  2) ACPV3 model  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 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. High-Harmonic-Generation: Velocity Map Imaging:  3) Electronic Driver Unit EDU5 model: The modern EDU5 electronic driver unit (that since the summer of 2017 superceded the previous EDU1-4 models) is matched for optimal performance of the ACPV2 and ACPV3 piezo valves. 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:   Operation and specifications 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 160 Volts
•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 fiber optics of chosen length, 10, 30 or 100 meter (unit: FRC10/30/100).  5) Isolation Box 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 consist 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. |
