1. USING CALIBRATIONS IN CSC SIMULATION
Rick Wilkinson
(Thanks to Igor, Oana, Stan, Dominique, & Stoyan)!

2. Effects Fetched From Calibrations
Gains
Pedestal
Pedestal Width
Correlated Noise
Crosstalk

3. Gains DB has a slope (~6) and an intercept
I expected a number like 2 ADC/fC
I use only the slope, with a fudge factor of 1/3
Gas gain is arbitrary, anyway.
Am I treating ME1/1 right?
Thinner chamber.
DB gains are similar.
Higher gas gain?

4. Pedestal Width and Correlated Noise
Off-peak samples: use pedestal widths
~ 1.5 – 2.5 ADC
Convert to a one-sample noise in simulation
Multiply by 2
On-peak samples: use noise matrix from DB
Do I subtract out pedestal noise in quadrature?
Noises applied to analog signal, before comparator.

5. Pedestal Width and Correlated Noise
Off-peak samples: use pedestal widths
~ 1.5 – 2.5 ADC
Convert to a one-sample analog noise in simulation
Multiply by sqrt(2)
Convert to fC (divide by gain)
On-peak samples: use noise matrix from DB
Do I subtract out pedestal noise in quadrature?

6. Crosstalk Simulation models crosstalk as:
Constant times neighboring signal (resistive)
Constant times the slope of the neighboring signal (capacitive)
Crosstalk is measured as a linear fit:
Crosstalk fraction
= m * (t-tpeak) + b
b is my resistive fraction, m proportional to capacitive.

7. Conclusion These effects are in the 1_5_0 cycle Easy to turn on
include "SimMuon/CSCDigitizer/data/muonCSCDbConditions.cfi”
replace muonCSCDigis.stripConditions = "Database"