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In this issue:
An Irresistible Force Meets Its Match
Dorfan Today: Do You Value SLAC Today? It's Crucial to Hear Both the Positive and Negative
Today's SLUO Seminar: Listening to Government
Electrical Safety Tip: What To Do if the Lights Go Out
Tuesday - May 30, 2006 |
An Irresistible Force Meets Its MatchA super-strong beam needs a super-smart containment system. With trillions of hard x-ray photons squeezed into a needle-thin beam, the Linac Coherent Light Source (LCLS) will pack quite a punch. "Its power density is tremendous," says SLAC's Mike Saleski. "It can bore a hole through several inches of copper and iron." A very complex system is needed to keep the beam from straying. With this in mind, Saleski, John Arthur and other SLAC researchers have devised an advanced containment system for the electron and x-ray beams that will be generated by the LCLS. Like the linac's current containment system, the LCLS system will use a combination of devices including collimators and stoppers. Both collimators and stoppers are used for beam containment, but whereas the stoppers move into the beam in order to shut it off completely, collimators are fixed apertures which limit the beam to a safe size (so it will stay in the beam pipe, for example). Read more... |
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