Verification procedure for isocentric alignment of proton beams
نویسندگان
چکیده
منابع مشابه
Verification procedure for isocentric alignment of proton beams
We present a technique--based on the Lutz, Winston, and Maleki test used in stereotactic linear accelerator radiosurgery--for verifying whether proton beams are being delivered within the required spatial coincidence with the gantry mechanical isocenter. Our procedure uses a proton beam that is collimated by a circular aperture at its central axis and is then intercepted by a small steel sphere...
متن کاملDynamic control of laser-produced proton beams.
The emission characteristics of intense laser driven protons are controlled using ultrastrong (of the order of 10(9) V/m) electrostatic fields varying on a few ps time scale. The field structures are achieved by exploiting the high potential of the target (reaching multi-MV during the laser interaction). Suitably shaped targets result in a reduction in the proton beam divergence, and hence an i...
متن کاملframe alignment procedure in digital transmission systems
every digital transmission system requires frame alignment. it is necessary to identify the varius signal componets and to bring receiver into phase with respect to the transmission format so that the digits can be properly assembled for demultiplexing. fast and reliable frame alignmant is important, and therefore has been a subject for study. this paper a comprehensive analysis of frame alignm...
متن کاملHigh precision alignment procedure for an ellipsometer.
Beam deviation in the polarizing elements is identified as a significant source of error in existing ellipsometer alignment procedures. A high precision alignment procedure that eliminates these errors is described. This procedure is less time consuming than previous methods, and its accuracy is comparable to the limit of resolution of the ellipsometer (typically 0.01-0.005 degrees ). A further...
متن کاملIntegrated Simulations of Targets for Fast Ignition with Proton Beams
(0.8 mg of DT at 400 g/cm) has been derived from the energy balance of an hypothetical power plant [2]. Secondly, self-consistent 2D radiation hydrodynamic simulations with MULTI [3, 4] allows us to define and optimize a HIB-driven hohlraum target, as well as to determine the minimum PB energy ( 33 kJ) needed to ignite the asymmetrically compressed fuel. Thermonuclear ignition and burn is now i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2007
ISSN: 1526-9914
DOI: 10.1120/jacmp.v8i4.2671