Use of Brass plates in Proton therapy beam

[techie08]

Hi all. I want to know the use of brass plates in proton therapy beam which is used for the treatment of variuous kinds of tumors. Can any one help me in giving the info bt the brass plates used for this purpose.

If anybody has the info regarding this, please do paste the link concerning this .

 

[Goahead]

You may look at the following:

http://www.jacmp.org/index.php/jacmp/rt/printerFriendly/2671/1360

http://www.mmsonline.com/articles/060601.html

http://cas.web.cern.ch/cas/Pruhonice/PDF/Meyroneinc.pdf

Regards,

http://www.welding-advisers.com/

 

[TVP]

techie08,

What exactly do you want to know? Goahead provided a good link from MMS Online showing how these parts are created. The aperature pieces are milled using large diameter brass bar, which is just a typical free machining grade like UNS C36000. My son just completed proton radiotherapy in early January, so I am somewhat familiar with these pieces. In fact, I will be the proud owner of two of them once they "cool" off from the radiation exposure.