mPEC Forum

หัวข้อทั่วไป => สัพเพเหระ => Topic started by: FogRit on October 04, 2006, 06:20:53 PM



Title: อนาคตของเครื่องเร่งอนุภาคจะเป็นอย่างไรกัน ?
Post by: FogRit on October 04, 2006, 06:20:53 PM
GeV ACCELERATION IN ONLY 3 CENTIMETERS.

Much of particle physics
over the past century was made possible by machines that could
accelerate particles up to energies of thousands of electron-volts
(keV), then millions of electron volts (MeV), and then billions
(GeV).  Possessing such high energies, beam particles can, when they
smash into something, recreate for a short time a small piece of the
early hot universe.  Now the effort to impart more acceleration to
particles over a short haul has taken a notable step forward.
Physicists at the Lawrence Berkeley National Lab and the University
of Oxford have accelerated electrons up to an energy of 1 GeV in a
space of only 3 cm.  The device used is called a laser wakefield
accelerator since it boosts the electrons using potent electric
fields set up at the trailing edge of a burst fo laser light
traveling through a plasma-filled cavity.  Previously gradients as
high as 100 GV/m had been attained, but the acceleration process
could not be sustained to energies much above 200 MeV.

(Leemans et al., Nature Physics, October 2006.)


Title: Re: อนาคตของเครื่องเร่งอนุภาคจะเป็นอย่างไรกัน ?
Post by: FogRit on October 04, 2006, 06:21:45 PM
http://www.nsrc.or.th/th/index.php?option=com_content&task=view&id=158&Itemid=15

นี่เป็นของไทยครับ