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1 Products availableWe offer a complete product range of Flange Multiplexer Instrument Housing, Alumina Rod,, Lock Ring Tool, Triplenuts Molybdenum and Rectangular Plates
UHV instrument housing / vacuum chamber (1) 2.75"CF rotatable port with tapped and clear holes (3) 1.33"CF ports Grabber Grooves on 2.75"CF Unitary 316L stainless steel construction with one weld Internal Voume: 4.9 cu. in. (79 cc) Weight: 1.25 lb. (0.57 kg)
Precision elements used in lens and source assemblies and other experimental apparatus. They come in 7 designs including two-, four-, or eight-pointed clamps. They attach to C-Series rods, tubes, threaded rods and cylinders.
All clamps have a thickness of 0.150" and an OD of 1.15".
Products include:SS-EC-2-150/520 (2 points, 0.500"/0.520" stepped ID, with tapped holes)SS-EC-4-150-521 (4 points, 0.521" ID, with tapped holes)SS-EC-4-150-500/520 (4 points, 0.500"/0.520" stepped ID, with tapped holes)SS-EC-8-150-625 (8 points, 0.625" ID, with tapped holes)SS-EC-8-150-521 (8 points, 0.521" ID, with tapped holes)SS-EC-8-150-500/520 (8 points, 0.500"/0.520" stepped ID, with tapped holes)SS-EC-8-150-520-SP4 (8 points, 0.520" ID, with tapped holes, sectioned into 4 pieces)
See Drawings above. Each product is sold separately.
The lock ring works essentially as a strong low-compliance spring; when locked on a rod, the metal far from the rod is in compression while the metal just adjacent to the rod is in tension.
As a special high-temperature, spring-grade stainless steel is used to make the lock rings (not stainless steel type 304), the rings are mildly magnetic. This residual magnetism is normally too low to cause any difficulties except when working with electrons at very low energies.
The lock rings have the advantages of being easy to apply with a lock ring tool, of providing a very strong clamping action, and of requiring a minimal amount of axial space along the rod.
Product available:
Non-conductive elements used mostly for mounting electrically isolated structures. They can be connected toScrew Clamps.
B-Series Rod: 0.062" dia.
See Print above. (Note: print contains stainless steel rods as well.) The third picture on the left shows asampling ofother Kimball Physics insulating eV Parts.
For threading parts a variety of lengths and sizes of ceramic rod (RO parts), along with alumina spacers (SP parts) of standard lengths of 0.5a, a, 1.5a, and 2a are available.
Several different methods may be used to secure the rod ends. One method utilizes horseshoe-shaped stainless steel lock rings (LR parts), which clamp onto any rod at any position desired without need of a groove.
An alternative method to secure the rod ends is to use screw clamps (SC parts). Some types can hold several rods at once. Screw clamps are non-magnetic and hold firmly even at temperatures up to 1000C; however, they are more bulky than the lock rings and the screws may freeze to the nuts after high temperature operation in UHV. Screw clamps may be used to fabricate very rugged filament mounts. They may be spotwelded to either plates or brackets. By use of an alumina spacer and a special screw, the two halves of the clamp may be insulated electrically from one another.
Another method of securing the rods, especially suited to small diameter rods, is to fuse the end of the rod into a small ball using a high temperature (greater than 2000C) torch. Normally this can only be done on one end of a rod: if both ends are fused, the structure cannot be disassembled later.
As a final means of securing rods, wirenuts (WN parts) have been made available. These wirenuts consist of closely wound coils which barely slip over the ceramic rods and have been given a kink to insure a bakeout proof friction fit. (The kink must be supplied by the user according to the amount of friction desired.) Wirenuts may be made from either stainless steel type 304 or from molybdenum, but since high temperature operation is often desired, the wirenuts normally furnished are molybdenum.
Round stainless steel plates used for closing the ends of cylinderparts.
Stainless steel square and rectangular plates (SS-PL) and round plates (SS-RP).Various sizes from 0.7" to 2.0" square and rectangles up to 6" long to cut to custom lengths as needed.Arrays of holes for attachment (ex: B5X5 is 5 holes on each side of a small B size 0.7" square, and C7X7 is 7 holes on a side of a large C size 2" square)Center of plate can have a square hole (S), round hole (R) of various diameters, or be a solid blank (B).
Products include:SS-RP-BXXX/YYY (B-Series plates with an OD of XXX and an ID of YYY)For B-Series, XXX ranges from 0.0620" to 0.750" and YYY is 0.0620".All B-Series parts come in 5/std pkg, except SS-RP-B062 which contains 50.
SS-RP-CXXX/YYY (C-Series plates with an OD of XXX and an ID of YYY)For C-Series, XXX ranges from 0.125" to 1.500" and YYY is 0.125".All C-Series parts come in 5/std pkg, except for SS-RP-C125 which contains 50.
Made from stainless steel or molybdenum and are intended for mounting large structures. They screw into a variety ofGroove GrabbersTM, Clamping Plate Assembliesand other Kimball components.
Stainless Steel products include:
SS-TR-6-32-12000 (Thread 6-32, length 12.0")SS-TR-4-40-12000 (Thread 4-40, length 12.0")SS-TR-0-80-12000 (Thread 0-80, length 12.0")
Molybdenum product:
Mo-TR-0-80-6000 (Thread 0-80, length 6.0")
(The Molybdenum rod is not available for multi-package discounts.)
The standard package for all Threaded Rods contains (1) part.
As a convenient means of joining long metal rods at right angles, special three-coil triplenuts (TN parts) have been produced. The axes of two of the three coils make an angle of about 15 degrees while the third lies between the other two, off to one side, and has its axis perpendicular to the plane containing the other two. To use triplenuts, a rod is first passed through the shorter third coil, then a second rod is passed through the two longer coils (15 degree angle). Pulling the two longer coils into line locks the second rod by friction, and simultaneously reduces the turns diameter on the third coil. This reduction locks the first rod. Ceramic rods may also be locked together using the triple nuts.
Product available:Mo-TN-C (5 parts/stan
Stainless steel plates may be positioned using spherical balls (BA parts). Balls allow closer hole alignment than rods, and generate structures which are inherently resistant to twisting. Balls have the disadvantages, however, of being considerably more expensive, harder to assemble, and less flexible with regard to plate spacing.
Small compression springs (CS parts) have been provided which fit precisely over rods or tubes to take up the differential expansion. The springs are made of tungsten, and thus retain their spring properties at high temperatures. These springs are also useful in making quick-change filament holders and other types of snap-together assemblies.
Spacers (SP parts), with outside diameters of 1.875a and inside diameters of 1.27a, are essentially short tubes which slip over either the ceramic or metal rods, and are intended as an additional way of spacing metal plates. Rigid structures can be made by alternating metal and ceramic spacers on one or more ceramic rods. Since metal spacers are less costly than ceramic spacers, it is frequently desirable to use a long metal spacer in series with a small ceramic spacer to provide wide insulated gaps between plates
Products include:
Stainless Steel SpacersSS-SP-B-XXX (XXX for various lengths) (16 parts/std pkg)SS-SP-C-XXX (16 parts/std pkg)
Alumina SpacersAl2O3-SP-B-XXX (XXX for various lengths) (32 parts/std pkg)Al2O3-SP-C-6000 (One six in. part/std pkg)Al2O3-SP-C-XXX (16 parts/std pkg)
Stainless steet plates may be positioned using spherical ceramic balls (BA parts). Balls allow closer hole alignment than rods, and generate structures which are inherently resistant to twisting. Balls have the disadvantages, however, of being considerably more expensive, harder to assemble, and less flexible with regard to plate spacing.
The choice between assembling structures using balls or rods, and the choice of means to secure rod ends when rods are used, generally depends on the application. It is often desirable to mix techniques.
Products include:
Al2O3-BA-CSaph-BA-B & C
See Drawings above.
Stainless steel machine nuts and screws are provided as replacement parts for custom assembly with eV parts.
As an aid to joining cylinders to plates, stainless steel wire ring parts (WR parts) are available in several sizes. These should be spotwelded first to the plate (with the cylinder in position), and then to the cylinder. Frequently the cylinders fit so well that the rings are not needed.
Products include:
SS-WR-XXXX/031 XXXX = Center Hole Diameter ramgomg from 0.250" to 1.500"All rings have a wire diameter of 0.031".All standard packages include 10 parts.
Flat plates are the basic parts in an eV system. Holes around the outside edge are intended for mounting. The outside borders are designed to allow plates to be mounted side by side in the same plane and still maintain a gap between them for electrical isolation. Dimensions are closely held to a +/- 0.001 inch tolerance.
Stainless steel square and rectangular plates (SS-PL) and round plates (SS-RP). Various sizes from 0.7" to 2.0" square and rectangles up to 6" long to cut to custom lengths as needed.
Arrays of holes for attachment (ex: B5X5 is 5 holes on each side of a small B size 0.7" square, and C7X7 is 7 holes on a side of a large C size 2" square)
Center of plate can have a square hole (S), round hole (R) of various diameters, or be a solid blank (B).
Series
B Series: Hole size: 0.062 "; Hole spacing: 0.150"; Plate thickness: 0.012"
C Series: Hole size: 0.125"; Hole spacing: 0.300"; Plate thickness: 0.025"
CB Series:Holes sizes: 0.062" & 0.125"; Plate thickness: 0.025"
SizeIndicates the number of holes per side E.g.: A 3x5 has a matrix of 3 holes by 5 holes L : Indicates a longer side, e.g.: SS-PL-B5Lx5L-S500 J: Indicates one line each of 0.062" & 0.125" holes in CB Series
Configuration
Standard - Full matrix of holes
Blank - Holes only on edges
Square Cut-Out - Square center cut out Round Cut-Out - Round center cut out
Round/Extra Holes - Round cut out with extra holes in plateOversize - Increase in length of square sideCorner Holes - Holes only in corner (C size, 3x3 only)
Cut-Out DimensionSize options for center cut-outs
Selected Part NumberIncludes parts/standard package
Special PartsSS-PL-C-6000: C-Series, 7X20, standard hole matrix
See Drawings above (Note: these are in the order found on Parts List - Quantities/Package with the exception of C & B Series with Extra Holes.)
(2) 2.75"CF and (2) 1.33"CF portsUnitary 316L stainless steel constructionCompactCan be used as a miniature vacuum chamberGrabber Grooves on 2.75"CF for internal mountingDouble density bolt holes on 1.33" CF portsWeight: 0.97 lbs. (0.44 kg)
1.33"CF 0.400" thick - ID 0.640"Can be used as a spacer in a UHV systemDouble density clear bolt holesMade from 316l stainless steelWeight: 0.08 lbs. (0.04 kg)
Stainless steel screw clamp assemblies (SCA) and clamping plate assemblies (CPA) are used for heavier loads. These consist of machined, tapped/clear hole clamping bar pairs, or bars and plates held together by screws.
These are precision-machined, tapped/clear hole clamping bar pairs held together by screws for the purpose of mountingC-Series rods, tubes, and plates.
C-Series: 0.125" holes, 0.300" hole spacing
The product family is:SS-SCA-CX (X is the number of rods/tubes that can be mounted and varies from 2 to 7.)The quantity of stainless steel screws provided is (X-1). Each product is sold individually
Stainless steel machine nuts and screws are provided as replacement parts for custom assembly with eV parts.
Available in stainless steel (4-40, 0-80) and molybdenum (0-80).See Drawings above. (Note: drawings can contain parts from other families.)
Wirenuts (WN parts) consist of closely wound coils which barely slip over the ceramic rods and have been given a kink to insure a bakeout-proof friction fit. (The kink must be supplied by the user according to the amount of friction desired.) Wirenuts may be made from either stainless steel type 304 or from molybdenum, but since high temperature operation is often desired, the wirenuts normally furnished are molybdenum.
Products include:Mo-WN-B (20 parts/standard package)Mo-WM-C (20 parts/standard package)
To protect the ceramic spacers from contamination, and to avoid charge-up by stray particles, a group of insulator protector parts (IP parts) has been provided. These protector parts are small cups with a hole in the bottom. The insulator protectors slip over the individual insulators and are held in place by the rods. Because the outside diameter is equal to the mounting hole diameter for the next larger size, the protectors may be used to reduce a single hole in a large hole plate to the next smaller size.
Products include:SS-IP-C (4 parts/standard package)SS-IP-CM-1 (2 parts/standard package)
attaches to Grabber Grooves in 2.75" CF ports in Kimball Physics vacuum chambers & fittingsDesigned to clamp (1) 0.750" cylinderSee Related Products Section (to the right) for eV Parts optionAll screws are gold plated for lubricationWeight: 0.08 lbs. (0.04 kg)
Sheet stock can be used to form duplicate parts from non-standard material. Adaptations of this technique can also be used to make variations on standard parts which cannot be made conveniently from the parts themselves.
Products include:
SS-SH-B-6000 (6.0" x 1.25" sheet, 4 sheets per std pkg)SS-SH-C-6000 (6.0" x 2.25" sheet, 8 sheets per std pkg)
Weld into spheres, tubes, cones and other shapesOversize conical bores improve chamber accessIncorporates Grabber GroovesTapped holes do not require nut clearanceWeight: 0.10 lbs. (0.05 kg)
Joins two 2.75"CF tapped hole components with minimal lengthRotatableBolt type: 12-point-head 1/4-28 x 1/2 shortIncorporates one pair of Grabber Grooves1.400" lengthWeight: 1.03 lbs. (0.47 kg)
Stainless steel cylinders (SS-CY) of many diameters from 0.250" to 1.500" and many lengths from 0.1" to 3".
Precision-cut lengths of seamless metal tubing used mostly in making electrostatic lenses. They are also used in constructing housings and shielding.
Products include:SS-CY-XXX/ZZZ (XXX = outer diameter (in.); ZZZ = length (in.)) Outside diameters: 0.250", 0.375", 0.500", 0.625", 0.750", 1.000", 1.250", 1.500"
Lengths range from 0.100" to 3.00"
Weights: 0.5 lbs (0.23 kg), 1.0 lbs (0.45 kg), and 2.0 lbs (0.91 kg)
Note: the Thin Flange must be inserted between two Conflat flanges which provide the necessary bending resistance.
The phosphor screen is typically mounted in front of a vacuum viewport.
RHEED applications
Also custom sizes and shapes
High luminosity P-22 blueRuggedized resists damageVacuum only to 10-8 torr, possible outgassingInput 1W/cm2 maxBakeable to 200CSS304 or glass backingStandard sizes up to 2"dia
Kimball Physics is a key supplier of electron guns designed for use in a wide variety of ultra high vacuum (UHV) surface physics, space physics, and processing applications. Guns can be focusable for small spot size, for use in applications such as x-ray production, welding and RHEED; or for flood beams, for use in charge neutralization, electron beam scrubbing, space simulation and radiation damage studies.
Range of Operation
Performance
Convenience
Operational Capabilities
Kimball Physics emitters provide a reliable source of electrons or ions for use in a variety of instruments including microscopy, lithography, x-ray generation, free electron lasers, electron accelerators, and other custom applications. Other applications include Kimball Physicselectron gunsandion guns.
Cathode Types
Base Types
Kimball Physics ion gun systems, or ion sources, are used for surface physics, space physics, vacuum physics, charge neutralization, detection calibration, secondary ion mass spectrometry and ion injection for MBE.
Range of Operation
Performance
Versatility
Operational Capabilities
Kimball Physics designs and manufactures two types of particle detectors: Faraday cups and phosphor screens.
The basic Faraday cups are stand alone units with no moving parts and are intended to be mounted in the vacuum system. A number of different types of mechanically or pneumatically actuated Faraday cups are available; most of these mount directly on the housing of electron guns, for direct sampling of the beam.
Faraday cup options:
Phosphor screens are made of high luminosity P-22 phosphor (ZnS:Ag). The screens are sensitive to electrons starting at approximately 500 eV with a threshold of 1 x 120-7 A/cm2.
Phosphor screen options:
eV Parts are a group of 350+ standardized parts that save time and money in construction of all types of surface physics and high vacuum apparatus. eV Parts are made of high quality materials and designed for maximum flexibility. Parts are manufactured to standard dimensions with high tolerances and may be used to modify or add to existing commercial high vacuum apparatus with little effort. Ordinary hand tools are the only additional tools needed to use eV Parts. For permanent applications, a laboratory spot-welder may be used. eV Parts come in standard packages where QTY/PKG varies by product type. Quantity discounts available for multiple packages in the eV Parts series.
High-Quality Vacuum Materials
eV Parts are manufactured from the highest quality materials available and can easily withstand 500C bakeouts. Standard parts are made of chemically cleaned 304 stainless steel and insulators are made of best grade 98/99% pure vitreous alumina. Refractory metal fasteners and springs are available for non-magnetic structures. Other materials including tantalum or gold plated stainless are available on request.
Assembly
eV Parts may be used to build rigid, self-supporting, and dimensionally stable assemblies. eV Parts are self-aligning by virtue of their mounting holes and remain locked in place even over extended bakeouts. Parts are assembled on centerless-ground ceramic rods and secured using any of a variety of fasteners: lock rings, screw clamps, strap nuts, friction wirenuts, and ordinary machine screws. Parts fit reliably and make the accurate alignment of lenses, slits, and apertures straight-forward. Assemblies may be disassembled quickly for modification, salvage, or cleaning. Permanent assemblies can be spot-welded.
Kimball Physics Multi-CF vacuum chambers and mounting hardware are particularly advantageous in UHV applications where there are spatial constraints and where a high density of experimental apparatus is required. Multi-CF vacuum chambers improve UHV performance with highly polished surfaces, contoured interiors and minimal welds. Designs are optimized for maximum internal access and internal volume. Multi-CF mounting hardware is standardized and interchangeable to save time and to ensure experimental set-ups can be assembled easily and reproduced accurately.
Kimball Physics Multi-CF products are compatible with industry standard Conflat vacuum flanges. Standard chambers and fittings are made from Stainless Steel 316L and can be customized in Titanium depending on application requirements.
Applications include:
instrument housing / vacuum chamber(1) 6.0"weldable port, (1) 4.50"CF and (2) 2.75"CFWeld to a 6.0" O.D. tube or 6 CF (with preparation)Incorporates Grabber Grooves for internal mounting on 2.75"CF and 4.50"CFDouble density bolt holes for 2.75" and 4.50" CF portsInternal Voume: 48.9 cu. in. (801 cc)Weight: 7.37 lb. (3.34 kg)
Standard copper gasket for 1.33" CF flange fittingsInner Diameter: 0.640"
Sold in packages of 10
Kimball Physics only sells standard copper gaskets for 1.33" CF fittings.
In-Vacuum BNC cable for use with Faraday Cups with BNC connectors. BNC Vacuum feedthrough mounted on 1.33" CF included.The cable has a BNC male connector on one end and a grounded shield UHV connector on the other end. The grounded shield UHV connector mates with the BNC feedthrough.
Lengths:19" Standard Length: $72039" Standard Length: $990Custom Lengths: Price TBD (call factory)
As an aid to running electrical wiring through a structure, alumina tubing parts (TU and XTU parts) have been provided which have the same outside diameter as the rods. The inside diameter of each tubing size is just big enough to clear the outside diameter of the next smaller size. Thus, parts can be nested according to the ingenuity of the user. The shorter tube parts are also useful in making high vacuum plug-in connectors, and rigid filament mounts (along with the clamps), and as bushings to insulate mounting holes. The tubing may also be used to pass threaded rods through a structure and then to load the structure in compression using machine nuts (MN parts). The use of threaded rods, however, is not as convenient as the other techniques described.
Product families include: Al2O3-TU-B-XXX (XXX is the length) Al2O3-TU-C-XXX
Mohit Verma (kimball physics)
2f/1 first floor nit faridabad, Haryana, India
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