Jean-Pierre Delahaye | 31 March 2011Is it possible to build a strong, long-term and globally coordinated accelerator R&D programme? Most probably, and Jean-Pierre Delahaye wishes to. In this week’s director’s corner, he explains how, referring to a review of new accelerator projects he presented at ICHEP2010 conference in Paris last year.
Category: Director's Corner | Tagged: accelerator R&D, GDE
Barbara Warmbein | 11 June 2009The team developing the ILC's positron source have every reason to be positive. Recent tests have shown both that the four-meter helical undulator prototype – a device that will produce an intense beam of polarised gamma rays – works in its cryomodule, and that the target that will produce the positrons themselves can reach its design rotation speed of 2000 revolutions per minute.
Category: Feature | Tagged: accelerator R&D, positron source, undulator
Barbara Warmbein | 31 July 2008In a linear accelerator, energy conservation is not really on the achievement list. To get up to the required luminosity, accelerator experts have one chance to push the particle beams to their limits, putting much energy into the bunches, correcting, scraping and tweaking them along the way only to smash them into each other and direct the straggly remains into a dump. Not so an Energy Recovery Linac, currently at the design and first prototype stage at Cornell University. The electron beams also get dumped after one run, but before that happens, they are tricked into handing over their energy back to the superconducting machine that accelerated them.
Category: Feature | Tagged: accelerator R&D, CESR, Cornell University, electron gun, energy recovery linac, ERL, injector
Barbara Warmbein | 26 June 2008“Our superconducting technology group here at Cornell is doing some very fundamental R&D,” says Hasan Padamsee, physics professor at Cornell university and expert in superconducting rf technology. “Note that the stress is on the fun in fundamentals.” Students are even allowed to drill holes into cavity prototypes in order to find out what makes certain areas in the material behave differently from others. A new mapping technique, invented by Cornell's Don Hartill, Zach Conway and Eric Smith, could make it possible to locate quenches during cavity tests with just eight (instead of up to 180) thermometers.
Category: Feature | Tagged: accelerator R&D, cavity temperature mapping, Cornell University, oscillating superleak transducers, secound sound
9 August 2007Clouds might be welcome during a drought, but you definitely don't want them in your beam pipes. Researchers around the world are working out how to keep a section of the proposed International Linear Collider—the positron damping ring—clear of electron clouds.
Category: Feature | Tagged: accelerator R&D, damping ring, electron cloud, SLAC