Concept of Virtual accelerator is introduced to develop beam control application programs in the KEKB accelerator control system. A virtual accelerator is a computer process which simulates behavior of a beam in an accelerator and responds to the accelerator control program under development in a same way as an actual accelerator do. Users of the virtual accelerator can test their control algor...

The Colorado State University (CSU) Accelerator Facility will include a 6-MeV L-Band electron linear accelerator (linac) with a free-electron laser (FEL) system capable of producing Terahertz (THz) radiation, a laser laboratory, a microwave test stand, and a magnetic test stand. The photocathode drive linac will be used in conjunction with a hybrid undulator capable of producing THz radiation. ...

Mechanical Engineering Center, High Energy Accelerator Research Organization, Tsukuba, JAPAN, [email protected] Mechanical Engineering Center, High Energy Accelerator Research Organization, Tsukuba, JAPAN, tatsuya.kume@ kek.jp Mechanical Engineering Center, High Energy Accelerator Research Organization, Tsukuba, JAPAN, yasuo.higashi@ kek.jp Mechanical Engineering Center, High Energy Accelerator...

Dust impacts on spacecraft are commonly detected by antenna instruments as transient voltage perturbations. The signal waveform is generated the interaction between impact-generated plasma cloud and elements of antenna–spacecraft system. A general electrostatic model presented that includes two key interaction, namely charge recollected from impact fraction electrons cations escape to infinity....

background: high-energy linear accelerator (linac) is a valuable tool and the most commonly device for external beam radiation treatments in cancer patients. in the linac head, high-energy photons with energies above the threshold of interaction produce photoneutrons. these photoneutrons deliver the extra dose to the patients in the planning treatment and increase the risk of secondary cancer. ...

The performance of an accelerator depends to a large extent on the quality of the theoretical algorithms and the level of their integration with the control software. Modern accelerator facilities are complex industrial-scale systems that are characterized by tightly bound, diverse scienti c and technical problems. New severe requirements for accelerator parameters result in the strong speciali...