1 / 7

USING CALIBRATIONS IN CSC SIMULATION

This document delves into the intricate effects of calibrations in CSC simulation, focusing on key parameters like gains, pedestal width, and correlated noise. It discusses the importance of accurately treating detector elements (e.g., ME1/1) and examines the application of noise in both on-peak and off-peak samples. The analysis explores crosstalk modeling and its linear fit to neighboring signals, emphasizing practical tips for utilizing simulation tools effectively. Overall, it provides vital insights for optimizing CSC performance and understanding calibration impacts.

morag
Download Presentation

USING CALIBRATIONS IN CSC SIMULATION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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"

More Related