More on the results of vacuum pumps:

Novel methods for NEG film and vacuum chamber production

Non Evaporable Getter are materials than can pump residual gaseous molecules after thermal activation in vacuum. During the activation, the surface oxygen diffuses inside the bulk....<<more>>

CAS vacuum aspects

Non Evaporable Getter Pumps ? Gas molecules can be sorbed by a chemical reaction when they impinge on the clean metal surface of the getter material. ? To achieve a clean metal surface the oxide layer must be removed in an activation process. ? For that the getter must be heated to a certain temperature. ? During activation the passivating layer diffuses into the bulk material. ? The ...<<more>>

Manufacturing Technologies - FMB Feinwerk- und Me?technik

An air–conditioned vacuum testing laboratory and complete equipment with 4 pumping stands, a quadrupole mass spectrometer, and vacuum gauges are available for determination of the specific outgassing rate (measurement of differential pressure through a diaphragm)....<<more>>

High Vacuum MEMS Package Sealing | SST International

Non-evaporable getters must be properly selected and integrated into the device to maintain the required vacuum levels. SST is the world leader in the development and implementation of processes and equipment for sealing of discrete high vacuum MEMS packages. These provide the ability to fully activate getters at high temperatures in a high vacuum while isolating temperature sensitive ...<<more>>

Index B in the Book Vacuum Science and Technoogy

Index B back-flow background pressure backing pump baffle bakeout ball valve bath cryopump Bayard-Alpert gauge bead blasting bellows Bernoulli's law etc...<<more>>

Vacuum | Vol 123, Pages 1-186 (January 2016

select article Characterisation of sputter-ion pumps to be used in combination with non-evaporable getters Research article Full text access Characterisation of sputter-ion pumps to be used in combination with non-evaporable getters...<<more>>

Read Evaluation of Non-Evaporable Getters for High Vacuum

Readbag users suggest that Evaluation of Non-Evaporable Getters for High Vacuum Hermetic Packages is worth reading. The file contains 31 page(s) and is free to view, download or print....<<more>>

Mechanical Design of the Intensity Measurement Devices for

non-evaporable getter (NEG) Tlm. The NEG is activated by heating the vacuum chamber to 200 C and more. Such temperatures affect the structure of the magnetic materi-als, which form the base part of the intensity measurement devices, and degrade their performace. A cooling circuit is needed. Due to the mechanical constraints, the cooling circuit, as well as heating element must form an ...<<more>>

ESS Vacuum Handbook Part 3 Design&Fabrication Rev0

? ESS Vacuum Handbook Part 4 – Vacuum Test Manual Part 3 provides guidelines, and imposes requirements where necessary, for the design and fabrication processes associated with the vacuum systems of the Accelerator, Target and...<<more>>

Fundamentals of Vacuum Technology

1 Preface Oerlikon Leybold Vacuum, a member of the globally active industrial Oerlikon Group of companies has developed into the world market leader in the area of vacuum technology....<<more>>

Vacuum Technology at CERN – Part 2 - Vacaero

The vacuum pressure in these beam pipes approaches the vacuum found in space and is one hundred trillion times less than atmospheric pressure, in the range of 10-10 to 10-11 mbar. One of the key features of the LHC is the storage ring concept....<<more>>

Vacuum brazing furnace, Vacuum brazing furnace direct from

Vacuum brazing furnace from Shanghai Gehang Vacuum Technology Co., Ltd.. Search High Quality Vacuum brazing furnace Manufacturing and Exporting supplier on Alibaba....<<more>>

NANJING HUADONG ELECTRONICS IMP. & EXP. CO., LTD.

High temperature-resisting Getter is a new kind of non-evaporable getter added with anti-sintering agent and activator and produced for stainless steel thermal containers’ vacuum brazing technique....<<more>>

A digital miniature x-ray tube with a high-density triode

The brazing process with a non-evaporable getter enables us to obtain and maintain a desired vacuum level for the reliable electron emission from the CNT emitters after the vacuum packaging of the miniature x-ray tube....<<more>>

A vacuum-sealed miniature X-ray tube based on carbon

A vacuum-sealed miniature X-ray tube based on a carbon nanotube field-emission electron source has been demonstrated. The diameter of the X-ray tube is 10 mm; the total length of the tube is 50 mm, and no external vacuum pump is required for the operation....<<more>>

A vacuum-sealed compact x-ray tube based on focused carbon

Consequently, the developed brazing process with an electrically activated non-evaporable getter could lead to the desired vacuum level for stable and reliable electron emission from the CNT emitters after the vacuum sealing....<<more>>

Capacitance manometer dissection - imajeenyus

The rear cover of the unit has the two electrical feedthroughs which make contact with springs, the pinch-off vacuum seal, and a non-evaporable getter mounted inside a little steel cup (top-right of second photo)....<<more>>

(12) (10) Patent No.: US 7,374,063 B2 United States Patent

gas-absorbing material, most commonly a “non-evaporable 15 getter material, within the vacuum-sealed space in order to achieve a sealed vacuum deeper than the vacuum of the chamber in which the insulating space is evacuated. The getter material, which may comprise metals such as Zirco nium, titanium, niobium, tantalum, and Vanadium, as well as 20 alloys of those metals, may be loosely ...<<more>>

DE69801456T2 - Non-evaporable getter alloys - Google Patents

Prior art keywords non evaporable getter getter alloys alloys evaporable Prior art date 1997-04-03 Legal status (The legal status is an assumption and is not a legal conclusion....<<more>>

Vacuum II - CERN

Capture Vacuum Pumps 30/5/2011 G. Franchetti 9 Getter Pumps (evaporable, non-evaporable) Sputter ion Pumps Cryo Pumps Principle Capture vacuum pumps are based on the process of capture of vacuum molecules by surfaces. Getter Pumps 30/5/2011 G. Franchetti 10 Solid Bulk Surface Gas. 11 Heating in vacuum Oxide dissolution -> activation T = RT T = T a NEGs pump most of the gas except rare gases ...<<more>>

WEB del Profesor Andrés Roldán Aranda - UGR

Gauges using the hydrostatic pressure of mercury or other non-volatile liquids. Modulation gauge. Gauges using the viscosity of a gas for pressure measurement. Gauges using the pressure dependence of the specific heat conductivity of the gas. Radiometer-effect gauges. Gauges using the interaction between electrons and gas particles. Survey of the operational ranges of vacuum gauges...<<more>>

The Activation and Measurement of Non-Evaporable Getters

The Activation and Measurement of Non-Evaporable Getters (NEG) at Daresbury Laboratory. The coating of the inner surface of vacuum chambers with Non-Evaporable Getter (NEG), developed at CERN, is an attractive solution for many UHV applications. flange it was decided to try a NEG coated cup, this was a 10 cm diameter and 10 cm length ...<<more>>

Vacuum Technology at CERN – Part 2 - Vacaero

Manufacturers of heat treating and brazing vacuum furnaces and controls, complete hot zone and vacuum furnace retrofits, thermal spray coatings, plasma, HVOF and paint coating services. Non-evaporable getter coating is a critical vacuum technology used in the LHC 4 Figure 4 ...<<more>>

VACUUM CHALLENGES AND SOLUTIONS - Institute of Physics

Vacuum challenges and solutions non-evaporable getters (p15), residual gas analysers (p17) and MBE machines (p19). And for people who are new to the vacuum field, or per-haps not as up to date as they would like to be, the supplement also con- Vacuum brazing and heat treatment....<<more>>

Vacuum II - CERN Document Server

Vacuum II Giuliano Franchetti GSI Darmstadt, D-64291 Darmstadt, Germany a surface coated with a non-evaporable getter (NEG) so that the layer of oxide on the the getter diffuses into the bulk. 2.1 Getter pumps (non-evaporable getters) vacuum has been adsorbed by the surface, less of the surface will remain free for the pumping process. ...<<more>>

CAS vacuum aspects - cas.web.cern...