I'm reading an article describing a particle detector. I did not understand the following things in it.
"The drift chamber (of this detector) was described as having a dE/dX resolution that is better than 6%. & a momentum resolution which is better than 0.5% for charged tracks with a momentum of 1 GeV/C."
Could anyone please explain to me in simple terms what they mean by these two sentences?
Answer
dE/dx is the rate of energy loss (over distance) from a charged particle in some material. If you measure dE/dx as a function of momentum (p), this can be used as a form of particle identification, because different types of particles follow different curves in this distribution.
Resolution of some variable q is usually quoted as Δqq where Δq is e.g. the width of a Gaussian distribution of the deviation between the true and measured quantity (taken from simulation or otherwise from some calibration or other).
So your sentences evaluate to:
Δ(dE/dx)dE/dx<0.06
and
Δpp<0.005(for p>1 GeV)
No comments:
Post a Comment