Assembly Planbook - April 2008 - (Page 21) The At full capacity, the Spallation Neutron Source in Oak Ridge, TN, will be eight times more powerful than any other pulsed neutron source in the world. Evolutıon perform alignments and part mating. “Modeling components within a single coordinate system is the way of the future for building networks,”says Joseph Error, group leader of the SNS alignment team. “The concept is not new, but what is really new is the tolerances in which we work. With the use of laser trackers, our goal is to position any component within 50 microns or less with respect to beam.” As an example of the laser trackers’ precision, one of the systems was used to locate 147 separate quadrupole magnets within six distinct segments making up a 116-foot length of accelerator tubing. The laser trackers were then used to position the tunnel segments—each of which is about the width of a 55-gallon drum—within the framework of the SNS. At the end of the process, the beam went right through on the first take. “SNS may well be one of the most successful alignment endeavors in our field, particularly on this large a scale,”Error says of his team’s success to date. “As each segment of the SNS was made operational, the quality of the beam was exceptional. A machine this size consists of hundreds of magnets of all sizes and shapes⎯some the size of your fist, some as large as an automobile, some weighing in excess of 20 tons. A number of these magnets are referred to as ‘correctors,’ as they help steer the beam and compensate for alignment deficiencies. As each section of the machine was commissioned, corrector magnets were not initially used. This was an amazing feat.” For more on laser trackers, visit www.hexagonmetrology.com or call 920-906-7700. now brings full programmability to a wide range of single station and multi-axis orbital forming machines. The presence and correct stacking of parts can be qualified; and pressure and duration can be controlled with assured repeatability. Process Control TAUMEL ASSEMBLY SYSTEMS PATTERSON, NEW YORK 12563 - 2165 (845) 878 - 4838 TEL: (845) 878 - www.taumel.com www.assemblymag.com April 2008 / ASSE M B LY 21 http://www.taumel.com http://www.taumel.com http://www.hexagonmetrology.com http://www.assemblymag.com
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