Emittance self-compensation in blow-out mode

Emittance compensation in split photoinjectors

The compensation of correlated emittance contributions is of primary importance to optimize the performance of high brightness photoinjectors. While only extended numerical simulations can capture the complex beam dynamics of space-charge-dominated beams in sufficient detail to optimize a specific injector layout, simplified models are required to gain a deeper understanding of the involved dyn...

Orbital blow out fracture.

fascial entrapment in blow-out fracture

blow out fracture is a common disease in oculoplastics clinics. one of indication for surgical intervention is entrapment of inferior rectus muscle in the fractured site. in this article authors represent two cases with this disease who underwent surgery for the entrapment of perimuscular fascia without inferior rectus muscle involvement. the results of treatment in both cases were excellent. t...

Transverse emittance blow - up due to injection errors

The tight transverse emittance budget for the LHC beam imposes severe constraints on the blow-up produced by injection errors. The modifications to the beam distributions and their possible parameterisation in terms of blow-up factors are discussed for betatron and dispersion mismatch as well as for injection offsets. The cases of initial uniform or gaussian distributions are considered in deta...

Orbital roof blow-out fractures.

The term blow-out fracture was co ined by Smith and Regan [1] to describe an orbital floor fracture caused by a very sudden increase in intraorbital pressure without concomitant fracture of the orbital rim . Most blow-out fractures involve the orbital floor. Less often the medial orbital wall is fractured either solely or in conjunction with a fracture of the floor [2]. Upward displacement frac...