I calculating the number of Electrons? (Current/Electron Density/Velocity)

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SUMMARY

The discussion focuses on calculating the number of protons in a beam traveling at the speed of light in the Tevatron at Fermilab, which carries a current of 11.17 mA around a 6.3-km circumference. Participants express difficulty in determining the number of protons due to the lack of a cross-sectional area value (A) needed for calculations. Key equations mentioned include current density = (number of electrons)(e)(drift velocity), highlighting the relationship between current, current density, and beam parameters.

PREREQUISITES
  • Understanding of current and current density in physics
  • Familiarity with the Tevatron particle accelerator and its specifications
  • Knowledge of basic particle physics, including protons and electrons
  • Ability to manipulate equations involving drift velocity and charge
NEXT STEPS
  • Research the relationship between current, current density, and cross-sectional area in particle beams
  • Learn about the properties and calculations related to the Tevatron at Fermilab
  • Study the concept of drift velocity in charged particle beams
  • Explore the significance of charge (e) in particle physics calculations
USEFUL FOR

Students in physics, particularly those studying particle physics and accelerator technology, as well as educators seeking to clarify concepts related to current and particle beams.

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Homework Statement




How many protons are in the beam traveling at the speed of light in the Tevatron at Fermilab, which is carrying 11.17 mA of current around the 6.3-km circumference of the main Tevatron ring?

Homework Equations



Not sure...



The Attempt at a Solution



I don't know how to calculate the the protons (electrons). I tried multiple different things but al the equations I have use the Cross Sectional area value (A) which can't be found from the given information.

I tried manipulating such equations as

current density = (number of electrons)(e)(drift velocity)

and other similar equations but the all contain some form of the value of A?

Please help :(
 
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What is current?
 


voko said:
What is current?

and how do you find J {current density} from I {current} and a circumference?
 


Liquidxlax said:
and how do you find J {current density} from I {current} and a circumference?

What is the significance of current density here?
 


Ok got it! Thank You!
 

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