NEC NEWS

April 2007 to November 2009

The long delay in updating the NEC website is a reflection of the increase in activity for electron and ion beam systems. During this time of worldwide economic turmoil, it seems that the market for accelerator systems continues to be very strong. In addition, development continues both in the area of completely new Pelletron configurations and the High Resolution RBS detector system for nano technology applications.

AMS Systems

Accelerator Mass Spectrometry (AMS) continues to be a very significant part of the accelerator market. All of the systems listed in our previous update have been accepted and are now in commercial operation at the customer's site. Accium Biosciences has seen a significant increase in demand for AMS analysis. They have added an additional ion source to their compact AMS system. The new ion source is capable of handling over 130 samples at one time.

Subsequent to the last update, five new AMS systems have been sold with deliveries extending into January 2011. One of these systems is a new compact AMS configuration designed for the radioisotope ratio measurement of beryllium, carbon, and aluminum. This system is undergoing final assembly at the NEC factory for the Institute of Geological and Nuclear Sciences in Lower Hutt, New Zealand. It is scheduled for shipment in December, 2009.

 

This photograph shows the compact AMS system, model XCAMS, in manufacture at the NEC factory. The ion source is in the background to the far left followed by the 500kV tandem Pelletron, 90° analyzing magnet and the electrostatic spherical analyzer located to the far right. In the background in the far right is the 45° magnet followed by the compact gas ionization detector. This system is designed for radioisotope measurements of beryllium, carbon and aluminum.

IBA Systems

Since the last update, an additional four tandem Pelletron systems have been sold for routine Ion Beam Analysis techniques such as Rutherford Backscattering (RBS). All of these tandem Pelletron systems are equipped with the NEC model RC43 analysis end station.

One of the above systems is also equipped with the NEC High Resolution RBS detector system. This system as described previously provides angstrom level resolution for extremely thin films.

The first High Resolution RBS detector (HRRBS) has been accepted and is in operation at the customer's site. The second system has completed its factory testing and is waiting for facility completion at the customer's site. A third system is in manufacture for shipment near the end of 2009 and a fourth is scheduled for shipment in late 2010. This poster gives a good overall view of the system's present capabilities.

Electron Beams

A 2.5 MeV electron Pelletron system, Model 7.5SHe-2, has completed its beam tests at the NEC factory and has been shipped. This system is designed to replace an older accelerator at the Laboratoire des Solides Irradies, Ecole Polytechnique at Palaiseau. It will be used primarily for materials irradiation and material modification. The currents range from 100 nanoamps to 200 microamps.

Triple Beam

Another Pelletron system has also been shipped for materials irradiation. This is a 2 MV tandem Pelletron which will join the JANNUS (Joint Accelerators for Nano Sciences and Nuclear Simulation) set of accelerators. It will join the already delivered and in operation Pelletron Model 3UH-HC which is equipped with the Nanogan ECR source in the terminal.

These two Pelletrons are part of a system which is used to simulate neutron induced damage and modify the properties of materials by ion implantation and irradiation.

Single Ended Pelletrons

A new ion beam laboratory is presently under construction at the Sandia National Laboratories in Albuquerque, New Mexico, USA. The Model EN, 6 MV tandem accelerator, will be moved into position during the first half of 2010. A new 3 MV single ended Pelletron will be moved to the site in mid 2010.

This new Pelletron system is designed for low beam energy spread and high brightness to be used with the Sandia submicron microprobe systems.

The University of Notre Dame, Indiana, U.S.A. has ordered a vertical, single ended Pelletron rated for 5MV. As with the first JANNUS Pelletron, it will be equipped with the Nanogan ECR source in the terminal. It will be housed in a new accelerator tower to be located over the existing FN accelerator hall.

The Notre Dame Pelletron will be used for nuclear astrophysics. It will accelerate heavy ions in high charge state for proton and alpha particle reactions using reverse kinematics. The first delivery of major portions of this accelerator system will begin in the second half of 2010 and will be complete in late 2011.

Three more machines were ordered within just the last month. One of these is a single ended 3 MV Pelletron that is sold with an empty terminal. The LASP Space Technology Research Center in Colorado will install a source capable of accelerating dust. This is for material studies in the aerospace industry. The second machine is an open air 150 keV proton accelerator. The third machine is a 1 MV tandem Pelletron equipped with beamlines both for MeV ion implantation and RBS/PIXE materials analysis. In addition, the Physics Department at Western Michigan University is adding an NEC dual ion source injector to their EN accelerator. The Pacific Northwest Laboratories is making significant improvements to their high energy beamlines and their Model 9SDH-2 Pelletron.