Quantum Betatron

The betatron and its medical application.

It is well known, that high-energy electrons can be used for tumor therapy. The so-called conventionel therapy with 100 through 250keV x· rays causes a great part of the x.rays to be scattered and absorbed in the sane tissue. In spite of the medicamental radiation prophylaxis additional radiation diseaes result by those compton scattered rays. By application of fast electrons and hard x.rays (s...

Betatron Matching into the Linac

In high energy linear colliders, the low emittance beam from a damping ring has to be preserved all the way to the linac, in the linac and to the interaction point. In particular, the R,hg-‘bLinac (RTL) section of the SLAC Linear Collider (SLC) should provide an exact betatron and dispersion match from the damping ring to the linac. A beam with a non-zero dispersion shows up immediately as an i...

On Radiation by Electrons in a Betatron

Measurements of the Betatron Functions in Rhic

The Relativistic Heavy Ion Collider (RHIC) provides collisions of the fully stripped gold ions for four experiments. This report shows results from measurements of the betatron functions within the Interaction Regions (IR) as well as in the arcs in both ”blue” and ”yellow” rings. A single quadrupole excitation or the beam position monitors’ RMS. values at injection are used to obtain the betatr...

Synchrotron-betatron parametric instability in free-electron lasers.