Difference between revisions of "Gas mixture tests"
From GlueXWiki
m |
m |
||
(4 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
= 90%-10% Ar-CO2 = | = 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: | ||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
|- | |- | ||
− | |width="415pt"|[[Image: | + | |width="415pt"|[[Image:Garfield-xt.jpg|thumb|none|400px|Distance to time relations calculated using GARFIELD.]] |
− | |width="415pt"|[[Image: | + | |- |
+ | |} | ||
+ | |||
+ | |||
+ | 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) | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedtime1a.jpg|thumb|none|400px|Pedestal versus time ch1.]] | ||
+ | |width="415pt"|[[Image:pedtime1b.jpg|thumb|none|400px|Pedestal versus time ch1.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedtime6a.jpg|thumb|none|400px|Pedestal versus time ch6.]] | ||
+ | |width="415pt"|[[Image:pedtime6b.jpg|thumb|none|400px|Pedestal versus time ch6.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | Comparing the drift time spectra: LEFT is gas system -- RIGHT is premixed | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:drifttime1a.jpg|thumb|none|400px|Drift time spectrum ch1.]] | ||
+ | |width="415pt"|[[Image:drifttime1b.jpg|thumb|none|400px|Drift time spectrum ch1.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:drifttime6a.jpg|thumb|none|400px|Drift time spectrum ch6.]] | ||
+ | |width="415pt"|[[Image:drifttime6b.jpg|thumb|none|400px|Drift time spectrum ch6.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:drifttime9a.jpg|thumb|none|400px|Drift time spectrum ch9.]] | ||
+ | |width="415pt"|[[Image:drifttime9b.jpg|thumb|none|400px|Drift time spectrum ch9.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:drifttime15a.jpg|thumb|none|400px|Drift time spectrum ch15.]] | ||
+ | |width="415pt"|[[Image:drifttime15b.jpg|thumb|none|400px|Drift time spectrum ch15.]] | ||
|- | |- | ||
|} | |} |
Latest revision as of 12:29, 17 February 2009
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:
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)
Comparing the drift time spectra: LEFT is gas system -- RIGHT is premixed