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Hi,
I was looking for ATLAS detector parts resolutions (momentum for Inner Detector and Energy for the CAL systems).
Does anyone have a nice reference?
So far I found something like this for the ID:
\sigma_{1/p_T} = 0.34 \text{TeV}^{-1} \Big(1 \oplus \frac{44 \text{GeV}}{p_T} \Big)
With ##\oplus## meaning that the two terms are added in quadrature and then the square root is taken.
However this formula was from Run1 and before the installation of the B-Layer.
Has the last altered this expression?
Similarily for the ECAL:
\frac{\sigma_E}{E(\text{GeV})} = \frac{a}{\sqrt{E(\text{GeV})}} \oplus b
a_{\text{design}}=10 \%
b_{\text{design}}=0.7 \%
or from tests on e, μ and pions:
a_{\text{exper}}=10.7 \%
b_{\text{exper}}=0.5 \%
(http://iopscience.iop.org/article/10.1088/1748-0221/3/08/S08003/meta)
Do you know if they have changed (ref)?
I don't think that the dependencies will be changed (1/p or sqrt(1/E) ) but the numbers in front probably have.
Thanks.
I was looking for ATLAS detector parts resolutions (momentum for Inner Detector and Energy for the CAL systems).
Does anyone have a nice reference?
So far I found something like this for the ID:
\sigma_{1/p_T} = 0.34 \text{TeV}^{-1} \Big(1 \oplus \frac{44 \text{GeV}}{p_T} \Big)
With ##\oplus## meaning that the two terms are added in quadrature and then the square root is taken.
However this formula was from Run1 and before the installation of the B-Layer.
Has the last altered this expression?
Similarily for the ECAL:
\frac{\sigma_E}{E(\text{GeV})} = \frac{a}{\sqrt{E(\text{GeV})}} \oplus b
a_{\text{design}}=10 \%
b_{\text{design}}=0.7 \%
or from tests on e, μ and pions:
a_{\text{exper}}=10.7 \%
b_{\text{exper}}=0.5 \%
(http://iopscience.iop.org/article/10.1088/1748-0221/3/08/S08003/meta)
Do you know if they have changed (ref)?
I don't think that the dependencies will be changed (1/p or sqrt(1/E) ) but the numbers in front probably have.
Thanks.