Vacuum properties of TiZrV non-evaporable getter films
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چکیده
منابع مشابه
The secondary electron yield of TiZr and TiZrV non-evaporable getter thin ®lm coatings
The secondary electron yield (SEY) of two different non-evaporable getter (NEG) samples has been measured `as received' and after thermal treatment. The investigated NEGs are TiZr and TiZrV thin ®lm coatings of 1 mm thickness, which are sputter deposited onto copper substrates. The maximum SEY dmax of the air exposed TiZr and TiZrV coating decreases from above 2.0 to below 1.1 during a 2 h heat...
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In the beam pipe of the positron damping ring of the Next Linear Collider, electrons will be created by beam interaction with the surrounding vacuum chamber wall and give rise to an electron cloud. Several solutions are possible for avoiding the electron cloud, without changing the bunch structure or the diameter of the vacuum chamber. Some of the currently available solutions for preventing th...
متن کاملEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN – EST CERN EST/2001-002 (SM) INFLUENCE OF THE ELEMENTAL COMPOSITION AND CRYSTAL STRUCTURE ON THE VACUUM PROPERTIES OF Ti-Zr-V NON-EVAPORABLE GETTER FILMS
Non-evaporable thin film getters based on the elements of the 4 and 5 columns of the periodic table have been deposited by sputtering. Among the about 20 alloys studied to date, the lowest activation temperature (about 180 °C for a 24-hour heating) has been found for the Ti-Zr-V system in a well-defined composition range. The characterization of the activation behavior of such Ti-Zr-V films is ...
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VACUUM PUMPING STUDY OF TITANIUM-ZIRCONIUM-VANADIUM THIN FILMS* Yulin Li and Simon Ho, LEPP, Cornell University, Ithaca, NY 14853, USA Abstract Vacuum pumping via non-evaporable getter (NEG) thin film deposited directly onto the interior of a vacuum chamber is a novel way to achieve extreme high vacuum. As part of R&D efforts for the proposed Energy Recovery Linac at Cornell, the pumping perfor...
متن کاملTiN and TiZrV Thin Film as a Remedy Against Electron Cloud
In many accelerators running positively charged beams, ionization of residual gas and secondary electron emission in the beam pipe will give rise to an electron cloud which can cause beam blow-up or the loss of the circulating beam. One solution to avoid the electron cloud is to ensure that the vacuum wall has low secondary emission yield (SEY). The SEY of thin films of TiN and sputter-deposite...
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ژورنال
عنوان ژورنال: Vacuum
سال: 2001
ISSN: 0042-207X
DOI: 10.1016/s0042-207x(00)00246-3