Ion Pumps Varian, Inc. Vacuum Technologies - Ideal Vacuum Products

Ion Pumps
sections as well as straight sections. The storage ring is
placed inside a tunnel with very thick concrete walls in
order to contain emitted radiation in case of beam loss.
Ultra high vacuum is an absolute necessity in this part of
the machine since the particles travel through the storage
ring for hours. The less residual gas there is, the more
focused the beam remains. Large Varian VacIon Plus
pumps, in the 300 - 500 l/s range are used for this
demanding application.
• Front Ends
The front end is the pipe work which transports the
particles under a vacuum from the extraction zone up to
the beamline outside of the tunnel of the ring. There you
can find a beam shutter as well as devices allowing the
isolation of the vacuum of the ring from that of the
beamline, which is often of lower pressure. Varian large
pumps, as in for the storage ring, can be used in this part of
the machine.
• Beam Lines
The experimental hall, around the storage ring, houses the
beamlines built tangentially to the ring. The beamlines are
usually specialized in a field of research (such as biology,
polymers, and magnetism) or an experimental method
(such as diffraction, EXAFS, and imaging). Some of the
longest beamlines are built outside the experimental hall.
Generally, large pumps are used in this part, from 300 l/s to
500 l/s. They can be combined with TSP and cryopanel in
order to pump even the lightest molecules.
• Miscellaneous Projects
Some fundamental research projects that use very sensitive
Courtesy P. Ginter - ESRF Grenoble.
Courtesy P. Ginter - ESRF Grenoble.
equipment (necessitating ultra-high vacuum with no
mechanical vibration) will find the solution in Varian VacIon
Plus pumps. The new gravitational waves detectors (GWD)
such as VIRGO in Italy and LIGO in the USA use Varian pumps
to produce and maintain the required vacuum.
Ion
Pumps
Instrumentation
Courtesy PSI SLS.
• Analytical systems that use focused charged particle beams
(CPB) and certain types of mass spectrometers such as
magnetic sector or Fournier Transfer often require
ultra-high vacuum.
• These applications have very stringent performance
requirements for sensitivity, resolution, sample throughput
and measurement repeatability. These requirements are
driven by the need to analyze ever-smaller samples,
especially in semiconductor, manufacturing, and other
high-tech applications.
• In general these applications require very clean vacuum
pumping, and only VacIon pumps can certify the required
level of cleanliness because Varian is the only ion pump
manufacturer that bakes each pump in a vacuum furnace,
and supply each pump with an RGA scan.
Varian, Inc. Vacuum Technologies
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