Difference between revisions of "Minutes-1-22-2015"
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== Gas puzzle == | == Gas puzzle == | ||
| − | - Lubomir investigated the effects of the alcohol in the gas. | + | - Lubomir investigated the effects of the alcohol in the gas using Garfield. Experimental results (first plot) from the FTD detector at HERA show increase of the drift velocity with the increase of the ethanol in their Ar/propane mixture. Garfield simulations (next two plots) describe this results well enough. Contrary, adding 1-propanol in our gas mixtures of Ar/CO2 makes the gas slower, and surprisingly increases the gain significantly - 70% if adding just 1% (absolute) alcohol. Thus, a mixture of 54/45/1 Ar/CO2/propanol explains (next two plots) both, the CDC time-to-distance and the increase by a factor of ~4 of the gain compared to the 50/50 mixture. |
== CDC update == | == CDC update == | ||
Revision as of 19:09, 23 January 2015
January 22, 2015 FDC+CDC meeting
Connection
- Instructions for Bluejeans meeting connection
- FDC meeting ID: 290664653
- To join via a Web Browser, go to the page [1] https://bluejeans.com/290664653.
Agenda
- Collaboration meeting agenda
- Gas puzzle
- CDC update (Mike)
- FDC update
- Gain calibration (Vlad)
- Electronics (Fernando, Cody)
- HVB refurbishment (Nick, Chris)
- Engineering (Dave)
- Other
