Library of Congress Cataloging-in-Publication Data Karzmark, C. J. Medical electron accelerators 1 C.J. Karzmark, Craig S. Nunan, and Eiji Tanabe. p. cm. : Medical Electron Accelerators: ** Signed gift inscription by co-author Craig Nunan to the previous owner on front endpaper **; Very. Medical Electron Accelerators by Karzmark, C. J.; Nunan, Craig S.; Tanabe, Eiji and a great selection of related books, art and collectibles available now at.

Author: Mebei Viran
Country: Sweden
Language: English (Spanish)
Genre: Sex
Published (Last): 6 August 2014
Pages: 335
PDF File Size: 19.26 Mb
ePub File Size: 6.62 Mb
ISBN: 625-6-77008-837-2
Downloads: 19360
Price: Free* [*Free Regsitration Required]
Uploader: Shamuro

There are currently three MRI-Linac systems under development. However, the spot size ranges from 0.

Second, we added a focusing ring around the cathode to increase the radial focusing fields at the point of emission Fig. A small ring like structure was added around the cathode in order to increase the radial focusing fields at the point of emission.

WorldCat is the world’s largest library catalog, helping you find library materials online. A potential limitation of this work is that no power input port acxelerators incorporated into the simulation.

Further, it does not require ferromagnetic shielding and so does not interfere with the MRI scanner. Please choose whether or not you want other users to be able to see on your profile that this library is a favorite of yours.

Exactly the same geometry as in Sec. These numbers take into account all back accelerated electrons. Your request to send this item has been completed. Note that the asymmetry evident in the plot without the focusing ring is due to the presence of the coupling cavity see color online version. Two utilize the in-line configuration tested in this work, while the third utilizes the perpendicular configuration.


An estimate of the total space electeon limited contribution to the current can be obtained as follows: The published solution operates optimally only in the relatively high field of G or higher, and it is not clear if acceptable solutions of this nature exist at lower field strengths. A large amount of strategies to mitigate the back-bombardment effect in RF guns has already been kaarzmark, and given that there is already at least one system in existence operating at similar pulse lengths and energies as would be required for this system the Kyoto University free electron laser injectorit is reasonable to believe that this effect could be managed.

Similar Items Related Subjects: RF guns are widely used in other particle accelerator fields, for instance, as injectors to synchrotron beams. You already recently rated this item.

A novel electron accelerator for MRI-Linac radiotherapy

In order to compare this to a conventional system, the RF source from Sec. As the sources of loss losses to the conducting walls and to the beam are very similar to previously published work, the required input power will also be similar to this—around 2.

In reality, perfect alignment is not possible. This refers to electrons which are accelerated back toward the cathode, where they deposit unwanted power.

Your rating has been recorded. Please verify that you are not a robot. Linked Data More info about Linked Data.


Comparison of the electron current from a conventional and RF electron source at the beginning source and end target of the accelerator. Performance in magnetic fields In order to assess the performance of the RF gun accelerator in the presence of in-line magnetic fields, the particle in cell model from Sec.

This can be achieved by modifying the magnet and magnetically shielding the Linac Ref.

A novel electron accelerator for MRI-Linac radiotherapy

The expected thermal emittance of the electron beam on the cathode surface is 0. Your list has reached the maximum number of items.

The alternative, ferromagnetic shielding, causes distortion in the imaging field of the MRI scanner. As the name implies, instead of the steady state fields used to produce an electron beam in conventional systems, RF electron guns utilize RF fields Fig. A Spatial distribution at the target.

One interesting result is the large variations which occur in spot size as a result of in-line magnetic fields.

The geometric emittance is 0. The bunch segmentation is indicated by the dots along the horizontal axis. Would you also like to submit a review for this item? Add a review and share your thoughts with other readers.