to come...
picture of the chamber with distance from the source to straws...

 


Chamber scanning with 65% Ar, 15% CF4 and 10% CO2
Straws 1-8
Straws 9-16
Straws 17-24
Straws 25-32
0903_0
0903_1750_2
0903_1800_2
0903_1650_20
0904_0
0829_1750_2, 0903_1750_2
0829_1800_2, 0903_1800_2
0904_1650_20
0904_0
0904_1750_2
0904_1800_2
0904_1650_20
0905_0
0904_1750_2
0905_1800_2
0904_1650_20
Straws 33-40 Straws 41-48 Straws 49-56 Straws 57-64
0905_0
0905_1750_2
0905_1800_2
0905_1650_20
0906_0
0905_1750_2
0905_1800_2
0905_1650_20
0906_0
0906_1750_2
0906_1800_2
0906_1650_20
0906_0
0906_1750_2
0906_1800_2
0906_1650_20

Combined  results (.ps)
 

Chamber scanning with 65% Ar and 35% CO2

Only the first straws (1 to 8) were scanned with this gas mixture. The same unstable behaviour as in the previous gas mixture was noticed. It was concluded that the ``hot spots'' on the chamber are given by the chamber construction
(wire locators?) and not depend on the gas mixture...

Data files:  0924_1650_20, 0924_1700_20, 0924_1800_2, 0924_1850_2 .
Combined  results (.ps)


Cristina Cârloganu
Created: Tue Sep 18 13:32:09 MET DST 2001
Last modified: Tue Sep 25 16:42:09 MET DST 2001