From: tjroberts137@sbcglobal.net   
      
   On 10/12/17 10/12/17   7:55 PM, John Heath wrote:   
   > On Thursday, October 12, 2017 at 5:36:47 PM UTC-4, Tom Roberts wrote:   
   >> [... Fermilab lithium lens used for anti-proton production]   
   >   
   > Hmmm interesting. 90 percent make it to the end. At 8 GeV the mass is   
   > ballpark 10 times normal. It should be scooting along at a good .99c . I can   
   > see why a Coulomb force is not that relevant at these speeds. I was wondering   
   > how much of a problem lithium temperature is with 500 k amps going through it   
   > plus a few annihilation here and there? Lithium is not the best conductor ,   
   > probably .01 to .1 m ohm for a tube that size. From what you know is keeping   
   > the lithium tube from over heating critical or well under control?   
      
   The lithium melts. Google is your friend -- design documents and performance   
   reports are surely available (this is HEP with a strong emphasis on open   
   documentation). I do know that each lithium lens survived for many months and   
   probably millions of pulses.   
      
   	BTW the mass of particles does not change as they are accelerated.   
   	You are apparently thinking of "relativistic mass", which is   
   	misnamed because it is really energy.   
      
   Tom Roberts   
      
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