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In this issue:
New Modulator Technology Looks Feasible for ILC
Colloquium Monday: High Performance Neural Prostheses
SLAC Celebrates Service Awardees
CEF Service Request System Upgrade
Friday - February 23, 2007 |
New Modulator Technology Looks Feasible for ILCA new type of modulator developed at SLAC reached important milestones on Wednesday, making it feasible to more reliably and less expensively provide power to accelerate particles at the proposed International Linear Collider (ILC). "This is a great accomplishment with very positive consequences for the ILC. Thanks to all involved for their hard work," said Gerry Dugan, regional director for ILC Americas. The ILC Marx Modulator, developed by Greg Leyh with Piotr Blum in the Power Conversion Engineering group, successfully delivered 120,000 volts at a current of 140 amperes, the voltage and current required by the klystrons, which pump power into the linear accelerator to accelerate electrons and positrons. Modulators convert AC power into specifically shaped pulses of DC power that can be used by klystrons. The ILC baseline design currently includes fully proven modulators that are considerably larger, more expensive, and less efficient than the Marx Modulator. If the new modulator demonstrates reliable full power operation by successfully completing a planned 2,000 hour test, it will be proposed as the new Baseline. Read more... |
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High Performance Neural ProsthesesThe body's seemingly effortless ability to reach out and swat a fly or grab a cup belies the sophisticated neural computations of the nervous system. It has long been recognized that, before moving, the body somehow prepares neural activity to create the desired movement. But the goals of movement preparation and the underlying neural mechanisms remain poorly understood. In next week's colloquium, Stanford Professor Krishna Shenoy will describe his recent investigations into how the cerebral (pre-motor) cortex prepares and helps execute movements. He will also discuss real-time electronic systems which are capable of translating neural plans into prosthetic movements. The colloquium takes place Monday at 4:15 p.m. in Panofsky Auditorium. All are invited to attend. Learn more... This colloquium was originally scheduled for December 18, 2006, but was rescheduled for this Monday due to illness. |
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