Conveners
SESSION 2: Components - Relation with industry
- R.J. REID (ASTEC)
Description
Components I - Relation with industry
Dr
Hiroshi Saeki
(JAPAN SYNCHROTRON RADIATION RESEARCH INSTITUTE)
11/04/2005, 16:30
SESSION 2
It is well-known that ionization gauges mis-read due to an influx of photoelectrons
flowing from an external environment. In the SPring-8 storage ring, some of hot-
cathode-ionization gauges (B-A gauges) have indicated abnormally-low pressures (on
the order of 10-9 Pa) or negative pressures (from -2 x 10-9 Pa to -2 x 10-7 Pa) at
stored-electron-beam conditions due to the same cause,...
Emma Hedlund
(Department of Radiation Sciences, Uppsala University)
11/04/2005, 16:45
SESSION 2
Outgassing measurements are often performed by vacuum specialists and physicists when
designing new accelerator equipment and experiments in storage rings etc. Such
measurements are, however, rather seldom published. It would be an advantage for the
vacuum community if such results could be made available for the general public by
creating a database. As an example, we could not find...
Mr
Jörg Kurdal
(GSI)
11/04/2005, 17:00
SESSION 2
For the SIS18 upgrade, in the frame of the FAIR project, the use of non evaporable
getter (NEG) films is foreseen.
This will increase the pumping speed for CO and H2 more than one order of magnitude.
Calculations performed by means of the Vaktrak code have proved that the
installation of NEG coated dipole and quadrupole chambers will lead to a better base
pressure of about a factor...
Mr
Willemjan Maan
(CERN)
11/04/2005, 17:15
SESSION 2
A brief history of the fast valves in use at CERN and of their mechanical design since the 1970’s will be given.
The recent example of the LEP fast valves will also be described as well as the improvements introduced.
Finally some arguments in favour and against the use of fast valves in high energy accelerators will be
enumerated and discussed.
