MODEL G-1 AND G-1-D NON-BAKEABLE ION GUN SYSTEMS
MODEL G-2 AND G-2-D BAKEABLE ION GUN SYSTEMS
COLUTRON ION GUN CONTROL UNITS
Model G-2 Ion Gun System
Colutron Research Corporation has two small Ion Gun systems to offer. Each Gun includes an ion source assembly, heat sink, acceleration and focusing system, vertical deflection plates, a 6" long velocity filter and a velocity filter guard ring control unit (for more information on components, see Colutron Ion Beam Kits ). Components are assembled in a vacuum housing fitted with a flange for mounting onto the customer's equipment. The guard ring control unit can be mounted into a standard 19" rack panel. Custom flanges and additional ports may be ordered if needed. When a beam decelerator is required with the gun, an adapter flange is included (model G-1-D and G-2-D Ion Guns). Colutron also offers control units (E-series) for the above Ion Gun Systems. The control units include all power supplies needed to operate the Ion Gun as well as a cooling unit for the ion source and vacuum gauge controls (Colutron Ion Gun Control Units).
The Gun systems are capable of producing a mass separated ion beam with either spot or line images and with adjustable dispersion. They are well suited for the following:
Ion injector for accelerators for Ion implantation, etc..
Chemical accelerators for hot chemistry, merging beams, and molecular beam research.
Isotope separation for Radioactive target preparation and activation analysis.
Atomic Physics for Atomic collision research.
Surface Analysis for SIMS, etc..
ION GUNS MODEL G-1 AND G-1-D
The model G-1 can be operated in an energy range of 500 eV to 10 keV. If an ion beam energy less than 500 eV is required, we recommend using the model G-1-D, which includes the model 400 decelerator and can produce mass selected ion beams with energies as low as 1 eV. The vacuum housing of the model G-1 series is made of a polished stainless steel tube, 6" in diameter and approximately 19" long. The length includes the model 500 insulator-mounting flange. The total length of the G-1-D is 23 1/8" when used with the model 400 decelerator. Both Ion Gun housings are supplied with a 6" ID roughing port. The standard exit flange on the models G-1 and G-1-D are an 8" OD and 6" ID conflat flange. The model G-1-D, however, has a 2 3/4" exit flange when used with the decelerator. Both the model G-1 and G-1-D are good for vacuum use to 10-7 Torr.
The G-2 and G-2-D Ion Guns are both designed to operate in the 500 eV to 10 keV energy range. The G-2-D Ion Gun however, which has the optional model 400 decelerator, can be used down to 1 eV. There are two differences between the G-1 and G-2 series Ion Guns. The G-2 Ion Guns are designed to be bakeable to 200o C, for use with ultra-high vacuum (UHV) systems. The magnet coils on the velocity filter are encapsulated in a stainless steel jacket and are liquid cooled, thus allowing for higher currents and magnetic field strength. Colutron recommends the CU-1 cooling unit for magnet and ion source cooling. The dimensions of the G-2 and G-2-D are the same as the G-1 and G-1-D respectively. Both the G-2 and G-2-D are designed to be good for a vacuum use to 10-9 Torr.
Beam Energy:
G-1, G-2 [500 eV to 10 keV]
G-1-D, G-2-D [1 eV to 10 keV ]
Resolution: M/
Up to 20 micro-amp focussed, 100 micro-amp unfocussed
POWER SUPPLY REQUIREMENTS FOR G-1 AND G-2 SERIES GUNS
Ion Source: Filament 16 V - 20 A, Anode 0 - 150 V, 0.4 A
IMPORTANT: Use voltage regulated power supplies for the ion source.
Lens System: 0 - 10 kV, 1 mA Acceleration Voltage, 0 - 10 kV, 0.5 mA Focussing Voltage
Vertical Deflection Plates: 0 - 400 V, 1mA
Velocity Filter Magnet: Model G-1: 9.5 V, 3 A Model G-2: 28 V, 14 A Continuous operation
Velocity Filter Deflection Plates: 0 - 300 V, 50 mA (Floating outputs)
The model G-1 is shown above. Model G-2 which has the same dimensions as the G-1 uses cooling connections for the velocity filter model 600-B, which are not shown in the drawing. The vacuum port and ion beam exit port are both standard rotatable 8" Conflats, with a 6" ID, with a 20 hole bolt pattern. The three electrical feed-through ports and vacuum gauge port are standard non-rotatable 2 3/4" Conflats, with 1 1/2" ID. Extra ports are also available.
The Colutron model G-3 (shown above) is a gun system without a velocity filter. The whole system is bakeable and has standard rotatable 8" conflats, with a 6" ID. Vertical and horizontal beam deflectors are provided. Power requirements for the ion source, lens system, and deflection plates are the same as for the G-1 and G-2 Ion Guns. Extra ports are also available.
Circuit diagram of Colutron ion beam kits and gun systems with decelerator
Custom flanges and ports
. Custom flanges and additional ports may be ordered with the Colutron Ion Gun Systems. Contact Colutron for a quote.Model 400 Beam Decelerator: Colutron recommends the beam decelerator (model 400) for ion energies less than 500 eV. The model G-1-D and model G-2-D include the standard model G-1 and G-2 respectively with optional model 400 decelerator and model 400-A adaptor flange.
Ion Gun Control Units: Colutron offers control units (E-series) for the above Ion Gun Systems. The control units include all power supplies needed to operate the Ion Gun as well as a cooling unit for the ion source. Vacuum gauge controls are also included.
Beam Viewing Systems: The optional Beam Viewing Systems (BVS) make it a snap to tune up the spatial profile of the ion beam. The systems are an invaluable aid in the initial startup of the ion gun. See sample ion beam profile below. Features include:
The picture above was made with the Colutron model G-2 ion gun, BVS-1 beam viewing system with optional CCD camera (BVS-1-OPT02) and image processing system (IPS-1). The picture shows the spatial profile of H3+ (at top), H2+ (middle) and H+ ion beams. The velocity filter dispersion was set low to get all three ion beams onto the viewing area of the BVS-1
Model E-2 control unit
CONTROL UNITS FOR COLUTRON ION GUNS G-1 AND G-2
E-1 Control Unit for G-1 Ion Gun [200 eV - 10,000 eV]
E-1-D Control Unit for G-1-D Ion Gun [1 eV - 10,000 eV]
E-2 Control Unit for G-2 Ion Gun [200 eV - 10,000 eV]
E-2-D Control Unit for G-2-D Ion Gun [1 eV - 10,000 eV]
The control units consist of a 65 inch tall cabinet mounted on casters and includes the following items:
Isolation Transformer.
Ion source supplies (filament, anode) and ion source thermocouple gauge.
Acceleration voltage supply.
Focusing voltage supply.
Magnet, horizontal and vertical deflection plates supplies.
Ionization vacuum gauge and thermocouple gauges with control unit.
Power controls and safety interlocks.
CU-1 Cooling unit (HFC-134a) for ion source and velocity filter magnet (Models G-2, 600-B only).
Power supplies and control for ion beam decelerator (Models E-1-D and E-2-D only).
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