Gas mixture tests

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90%-10% Ar-CO2

After finding a problem with the gas mixer a test is performed to compare drift time spectra taken with a premixed gas and with the gas mixer. The GARFIELD calculation can be found in following figure:

Distance to time relations calculated using GARFIELD.


4 straws will be compared: straw# 1-6-9-15. Let's start with the pedestal (and compare only straw 1 and 6) versus time: (left is gas system - right is premixed)

Pedestal versus time ch1.
Pedestal versus time ch1.
Pedestal versus time ch6.
Pedestal versus time ch6.