What's New at NEC
What's New at NEC
October 2005 - March 2007
This continues to be a very busy time for NEC with individual orders near record highs. While Accelerator Mass Spectrometry (AMS) applications continue to be very significant, the percentage of ion beam systems for other applications has increased significantly. In addition, Pelletron systems for routine Ion Beam Analysis (IBA) have increased. NEC has received orders for a 400 keV open air implanter and a 3 MV Single Ended Pelletron with an ECR (Electron Cyclotron Resonance) ion source in the terminal.
In addition to AMS systems for university and research centers, a number of private companies now have NEC AMS systems in operation. These include Accium Biosciences in Seattle, Washington and Beta Analytic in Miami, Florida. In addition, a Single Stage AMS system equipped with two 134 sample Multi Cathode SNICS sources is presently in manufacture for Xceleron Ltd. This AMS system will be located at their new offices in the United States.
At the present time, eight Single Stage AMS system have been sold. Five are presently in routine use, one is presently undergoing installation and another two are in manufacture for delivery in late 2007 and early 2008.
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The compact, tandem Pelletron based AMS systems are still in demand. Nine (9) of these systems are in use and a tenth has just been accepted at the 14CHRONO Laboratory at Queens University in Belfast. There are now approximately 30 dedicated AMS systems manufactured by NEC throughout the world. |
An upgrade is now available for the 40 sample Multi Cathode MC-SNICS. This upgrade is the conclusion of the work done by several AMS groups involving Dr. John Southon and Dr. Guaciara Santos at the University of California, Irvine, Dr. Warren Beck at the University of Arizona and Dr. Baoxi Han and Dr. Mark Roberts at the Woods Hole Oceanographic Institute.
This upgrade consists of three major parts. The first is modification to the source housing to replace the cesium feed line, move the ionizer feedthrough and blank off the cesium focus feedthrough which is no longer used. The second part is the replacement of internal components with a spherical ionizer, immersion lens, cesium flow diffuser, and spacers to revise the cathode/ionizer spacing. The third part involves the replacement of the cesium oven and cesium feedline with a vacuum insulated assembly. All of this results in a beam current improvement of 2 to 3 with much better emittance.
If you have the NEC 40 sample MC-SNICS, please contact NEC for an upgrade quote.
There are now five tandem Pelletron accelerator systems in manufacture for routine materials analysis. These systems range in terminal potential from 1 MV to 5 MV.
One of the 1.7 MV tandem Pelletrons is equipped with the RC43 analysis end station with the NEC electrostatic quadrupole quadruplet lens in the chamber for microprobe analysis. This is an all electrostatic system providing a beam spot size from 20 microns to approximately 10 microns. There are now 10 ion beam systems in use using the NEC microprobe lens.
| The first NEC high resolution RBS system is presently in manufacture for use on a 1MV tandem Pelletron. This is a 90 ° magnet/Multi Channel Plate (MCP) detector. This system is being designed to provide a surface resolution of about 10 Angstroms. |  |
Two very different systems have been built materials modification. The first is an open air, 400 kV implanter deck equipped with the Danfysik 921A ion source. The ion source is followed by a 90 ° mass analysis magnet on the deck. This system is designed to provide a wide variety of singly charged positive ions for use at the Michigan Ion Beam Laboratory, at the University of Michigan.
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The second system is a single ended Pelletron with four charging chains. For the first time, National Electrostatics has incorporated an ECR source in the terminal of a single ended 3 MV Pelletron. The model 3UH-HC is equipped with the nanogan ECR source manufactured by Pantechnik. This a 10 GHz, compact permanent magnet ECR source. At the present time, (March 2007) this system is undergoing installation at the Conmissariat a l'Energie at Saclay, France. This system is part of the JANNUS triple ion beam project. |
Since 1969, NEC has been converting the old EN, FN and MP accelerators to the Pelletron charging system. The latest order for conversion is for the FN at the Horia Hulubei National Institute of Physics and Nuclear Engineering in Bucharest, Romania. This conversion is scheduled for shipment in September, 2007. When this conversion is complete, NEC will have converted twelve (12) of the eighteen (18) FN's that have been built.
Since our last update, the EN at the iThemba Laboratory in South Africa has been converted. There are now seven (7) of the twenty-six (26) ENs in the world running with the Pelletron charging chains.
We have begun manufacturing a major upgrade to the 1.7 MV tandem Pelletron, model 5SDH-2 at the China Institute of Atomic Energy near Beijing. Originally, this Pelletron was equipped with two (2) standard SNICS ion sources for DC positive ion beams. The upgrade consists of a pulsing and bunching system to provide nanosecond with pulses for protons and deuterons. This new injector system will be based on the NEC TORVIS. This will be the eighth (8) TORVIS system sold. Shipment is scheduled for early Fall, 2007.
Also in manufacture are two (2) 250 kV decks for the continuing construction of the High Power Target Laboratory (HPTL) at the Holifield Radioactive Ion Beam Facility (ORNL). These two platforms will be added to the ion source platform already on site. One of the platforms is designed to accommodate the injection beamline next to the ion source platform. The second platform is the instrumentation deck located in an adjoining room. This deck is 6.2 meters by 4.4 meters and will be shipped with a dual motor generator set.
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For orders, inquiries, comments and more information about our products, please contact our sales department at nec@pelletron.com
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