Ion Pumps
Details
- Best ultimate vacuum pump for MBE
- Compatible with all MBE systems
- Suitable for pumping reactive gases
- Very clean – no contamination introduced into the system
- Many years of use before reconditioning
Presentation
Ion pumps have been a primary choice for UHV systems. They are clean, bakeable, vibration free, operate in the 10-11 Torr range with low power consumption and have long operating lives. Riber diode pumps offer the highest pumping speed for oxygen O2, hydrogen H2, nitrogen N2, carbon dioxide CO2, carbon monoxide CO and other getterable gases.
Ion pumps require periodic bakeouts to preserve performances. The bakeout system consists of insulated chambers completely surrounding the pump. The pump is baked up to 150°C during operation, removing water vapor and preserving a high limit vacuum.
Riber offers standard exchange of your ion pump :
– Shorten maintenance time
– Cost effective solution
Technical note
All ion pumps are made of 25 l/s pumping elements. They are made of the same basic components: a parallel array of short stainless-steel tubes, two plates spaced at a short distance from the open/end of the tubes and a strong magnetic field parallel to the tube axes. The electrode is positioned between the poles of a magnet. Electrons released from the cathodic tube plates are constrained by the magnetic field into tight helical trajectories in the anodic tubes. The potential energy of gas molecules ionized in the tube is converted to kinetic energy and the cathode sputters titanium when struck by an ion.
The TTZ model has the same electrical arrangement as the standard but one Ti plate is associated with a getter material.
Layout
Technical information
| SPECIFICATIONS | PI 200 | PI 400 | PI 900 |
|---|---|---|---|
| Dimensions A/B/C/D in mm | 208 / 203 / 392 /392 | 472 / 203 / 392 / 392 | 670 / 254 / 495 / 495 |
| Nominal speed for air | 200 l/s | 400 l/s | 900 l/s |
| Connecting flange | DN150CF | DN150CF | DN200CF |
| Starting pressure | 8.10-3 Torr | ||
| Ultimate pressure | < 8.10-12 Torr | ||
| Operating voltage | 4.8 kV | ||
| Maximum bakeout temperature | 150°C with magnet / 450°C without magnet | ||
| Number of high voltage feedthroughs – MTHT CF16 * | 1 | 1 | 2 |
| Mass | 63 kg | 110 kg | 230 kg |
| Number of pumping elements | 8 | 16 | 32 |
| TTZ version | Optional | Optional | Included |
*: for power supplies contact Riber
| ION PUMPING ELEMENTS : | Standard elements STT % of nominal speed |
Noble gas rare elements TTZ % of nominal speed |
|---|---|---|
| Hydrogen | 200 % | 200 % |
| Carbon oxides / Water vapour / Nitrogen | 100 % | 90 % |
| Light hydrocarbon | 90-160 % | 80-150 % |
| Oxygen | 60 % | 55 % |
| Helium | 10 % | 35 % |
| Argon | 1 % | 30 % |
Standard pump elements are perfectly suited to pumping residual static atmospheres including typical quantities of noble/rare gases.
