Positron source R&D makes progress
The 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 […]
On 23 March, the 2008 Nishikawa Award Ceremony was held in Tokyo, and awards were given to three ILC scientists: Yoshihisa Iwashita (Kyoto University), Hitoshi Hayano (KEK) and Yujiro Tajima (Toshiba Co., Ltd). Nishikawa Award commemorates a deed of Tetsuji Nishikawa, former KEK Director General, and honours the achievements of highly creative, internationally recognised, R&D […]
Cornell University is testing a prototype injector for an Energy Recovery Linac
In 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 […]
Cornell proposes new cavity temperature mapping technique
Is it a microphone? Is it a thermometer? It’s an oscillating superleak transducer! Cornell’s re-entrant nine-cell cavity was tested with the second-sound method. The yellow dot shows where a quench occurred. “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 […]
Clouds 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. In curved sections of accelerators, such as a damping ring, the beam throws off […]
What do superconducting cavities and the beach have in common? KEK accelerator physicists can give you the answer: the crab. During the spring operation period of the KEKB accelerator, scientists successfully achieved effective electron-positron collisions in a new cavity. Called the crab cavity, it tilts each bunch sideways so that the bunches collide head-on at […]
The Temple of Heaven, a masterpiece of architecture and landscape design in Beijing symbolises the relationship between earth and heaven – the human society and the universe – which stands at the heart of Chinese cosmology. It was the central image on the poster for the 9th ACFA ILC Physics & Detector Workshop and ILC […]
Not all vibrations are good. With their 600 nanometres in width and only 6 nanometres in height, the ILC’s particle beams could easily be veered off course if parts in the accelerating modules, for example the final focus quadrupole, moved by only a few nanometers. Monitoring and feedback systems will make sure that this doesn’t […]
Director’s Corner 22 March 2007 Barry Barish ILC Baseline Alternative: The Re-entrant Cavity Hasan Padamsee, leader of the Cornell superconducting RF R&D group ILC R&D on superconducting RF technology is of special importance because it represents our central technology, and it is an area where we are forging the way for future accelerators that will […]
Director’s Corner 1 March 2007 Barry Barish Ray Larsen ILC Baseline Alternative: The Marx Modulator Today’s issue of ILC NewsLine features a special column written jointly by GDE Director Barry Barish and Ray Larsen of SLAC. The release of the ILC Reference Design was a very important milestone. Yet, we have emphasised that it is […]