نتایج جستجو برای: plasma accelerator
تعداد نتایج: 370240 فیلتر نتایج به سال:
A plasma-wakefield accelerator has accelerated particles by over 2.7 GeV in a 10 cm long plasma module. A 28.5 GeV electron beam with 1.8 x 10(10) electrons is compressed to 20 microm longitudinally and focused to a transverse spot size of 10 microm at the entrance of a 10 cm long column of lithium vapor with density 2.8 x 10(17) atoms/cm3. The electron bunch fully ionizes the lithium vapor to ...
Plasma accelerators sustain extreme field gradients and potentially enable future compact linear colliders. Although tremendous progress has been achieved in accelerating electron beams a plasma accelerator, positron acceleration with collider-relevant parameters is challenging. A recently proposed scheme relying on the wake generated by an drive beam column shown to be able accelerate witness ...
In following the theme of this Symposium, \Plasma Science and Its Applications," we may be suggesting to some readers that the \other" applications of Plasma Science somehow justify the existence of a eld traditionally devoted to fusion energy. In fact, we do not believe that plasma science can or should be justi ed for its spin-o contributions. Nevertheless, the unity of science would be serio...
The nonlinear, blowout regime of the plasma wakefield accelerator has been the subject of considerable interest due to its potential for use as a next generation accelerator in high energy physics experiments. Much of the analytical work and simulation in this regime has been restricted to scenarios of cold background plasma. Significant theoretical results concerning plasma thermal effects hav...
A nonlinear beat-wave regime of plasma wave excitation is considered. Two beat-wave drivers are considered: intensity-modulated laser pulse and density-modulated (microbunched) electron beam. It is shown that a long beat-wave pulse can excite strong plasma waves in its wake even when the beat-wave frequency is detuned from the electron plasma frequency. The wake is caused by the dynamic bistabi...
Acceleration of electrons by an electron plasma wave has been of great current interest because of its much larger acceleration gradient than that of conventional rf linacs [1]. Several methods have been proposed for driving a largeamplitude fast-phase-velocity plasma wave [1]. In the Laser Wake-Field Accelerator (LWFA), an electron plasma wave is driven resonantly by a short laser pulse throug...
GSI has proposed a new synchrotron and storage ring facility for the future development of research in Nuclear Physics and in Plasma Physics. A new synchrotron accelerator (BR=100 Tm) with strong bunch compression capability will be the main machine in the new accelerator complex. One of its major design goals is to deliver intense uranium (q=28+) beams at 0.4-2.7 GeV/u for the production and s...
In this paper, the status of the Laser-Plasma Accelerator field within the Advanced Accelerator Concepts area of research is reviewed. In particular, I review the status of the Plasma Beat Wave Acceleration (PBWA) scheme, the SelfModulated, Laser-Wake Field Acceleration (SMLWFA) scheme and the Laser-Wake Field Acceleration (LWFA) scheme. In all these three schemes, charged particles are acceler...
A new record has been set for the acceleration of particles in a plasma wakefield — an energy gain of more than 2.7 GeV in a 10-cm-long device. Pushing the energy frontier is not easy. But plasmas, which are capable of generating large focusing and accelerating fields, might offer a solution. Beam−plasma and laser−plasma tests have shown promising results, and more recently beam-driven wakefiel...
In the E164 Experiment at that Stanford Linear Accelerator Center (SLAC), we drive plasma wakes for electron acceleration using 28.5 GeV bunches from the main accelerator. These bunches can now be made with an RMS length of 12 microns, and accurate direct measurement of their lengths is not feasible shot by shot. Instead, we use an indirect technique, measuring the energy spectrum at the end of...
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