On some theoretical problems of laser wake-field accelerators

Wake Field Accelerators

Near Field " Laser Accelerators

One particular laser accelerator is discussed in detail: the Template Laser (LT) Accelerator. According to one design, it employs mirrors placed periodically along the particle trajectory. According to another design, the mirrors are omitted, and additional electromagnetic fields are employed instead. The former design is a near field accelerator, but the latter is not. It is shown that contrar...

global results on some nonlinear partial differential equations for direct and inverse problems

در این رساله به بررسی رفتار جواب های رده ای از معادلات دیفرانسیل با مشتقات جزیی در دامنه های کراندار می پردازیم . این معادلات به فرم نیم-خطی و غیر خطی برای مسایل مستقیم و معکوس مورد مطالعه قرار می گیرند . به ویژه، تاثیر شرایط مختلف فیزیکی را در مساله، نظیر وجود موانع و منابع، پراکندگی و چسبندگی در معادلات موج و گرما بررسی می کنیم و به دنبال شرایطی می گردیم که متضمن وجود سراسری یا عدم وجود سراسر...

Wake-Field Damping In A Pair Of X-Band Accelerators For Linear Colliders

We consider means to damp the wake-field left behind ultra-relativistic charges. In particular, we focus on a pair of travelling wave accelerators operating at an X-band frequency of 11.424 GHz. In order to maximize the efficiency of acceleration, in the context of a linear collider, multiple bunches of charged particles are accelerated within a given pulse of the electromagnetic field. The wak...

Laser Plasma Accelerators

Particle acceleration by relativistic electron plasma waves generated by intense lasers has been demonstrated in a number of experiments by various mechanisms. Accelerating fields as high as 1 GeV=cm, with electrons accelerated to about 100MeV in millimetre distances have been achieved. These fields produced by intense lasers in plasmas are the largest ever produced in laboratory experiments. T...