We report a new approach to the generation of high-current, high-brightness electron beams. Primary electrons are produced by a photocathode (or other means) and are accelerated to a few thousand electron-volts, then strike a specially prepared diamond window. The large Secondary Electron Yield (SEY) provides a multiplication of the number of electrons by about two orders of magnitude. The seco...

Boğaziçi Üniversitesi KAHVE Laboratuvarı’nda prototip termiyonik electron tabancası, endüstriyel elektron demeti uygulamalarında deneyim kazanmak amacıyla tasarlanmış ve üretilmiştir. Elektron tabancası tungsten filament, Wehnelt bardağı, Faraday bardağı solenoid bileşenlerinden oluşmaktadır. benzetimleri IBSimu isimli program kullanılarak gerçekleştirilmiştir. Üretimi gerçekleştirilen 20 kV po...

The low emittance and short pulse electron beam is expected to be used in a wide field, such as X-ray generation by inverse Compton scattering, pulse radiolysis, etc. The laser driven photo cathode rf gun system is possible to produce the low emittance and short pulse electron beam [1]. It is very important for generating the low emittance and short pulse electron beam to measure the beam chara...

Significant progress has been made in the last few years in ultra-short and high-brightness electron beam production and measurements. For many applications, such as laser and high-frequency RF (W-band) accelerators, and high-gain harmonic generation free electron laser, electron beams with bunch length and transverse emittance smaller than optical wavelength are required. The status of such sm...