Difference between revisions of "Minutes-7-14-2016"
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#** Electron deflection in B field Garfield: [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_perp_RK.pdf perp. to wire], [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_16deg_RK.pdf at 16deg.], [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_16deg_MC.pdf MC at 16deg.], [http://www.jlab.org/Hall-D/detector/fdc/genfit/deflection_11615.pdf genfit results] | #** Electron deflection in B field Garfield: [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_perp_RK.pdf perp. to wire], [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_16deg_RK.pdf at 16deg.], [http://www.jlab.org/Hall-D/detector/fdc/garfield/garfield_2T_16deg_MC.pdf MC at 16deg.], [http://www.jlab.org/Hall-D/detector/fdc/genfit/deflection_11615.pdf genfit results] | ||
#** Drift time in B field [http://www.jlab.org/Hall-D/detector/fdc/genfit/time_to_distance_11615.pdf genfit results] | #** Drift time in B field [http://www.jlab.org/Hall-D/detector/fdc/genfit/time_to_distance_11615.pdf genfit results] | ||
− | #** Resolutions with genfit [http://www.jlab.org/Hall-D/detector/fdc/genfit/Pdistr_11615.pdf Momentum distributions], | + | #** Resolutions with genfit [http://www.jlab.org/Hall-D/detector/fdc/genfit/Pdistr_11615.pdf Momentum distributions],[http://www.jlab.org/Hall-D/detector/fdc/genfit/XY_res_Bfield.pdf vs momentum], [http://www.jlab.org/Hall-D/detector/fdc/genfit/wire_res_Bfield.pdf wire resolution] |
+ | #** Some systematics: [http://www.jlab.org/Hall-D/detector/fdc/genfit/XY_residualX_11615.pdf], [http://www.jlab.org/Hall-D/detector/fdc/genfit/XY_residualY_11615.pdf] | ||
# NIM Papers | # NIM Papers | ||
#* svn ls https://halldsvn.jlab.org/repos/trunk/publications/GlueXCDC | #* svn ls https://halldsvn.jlab.org/repos/trunk/publications/GlueXCDC | ||
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# fADC125 meeting (Naomi, Cody, Beni) | # fADC125 meeting (Naomi, Cody, Beni) | ||
# Other | # Other | ||
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− | |||
= Minutes = | = Minutes = | ||
− | Participants: Sean (NU) | + | Participants: Sean (NU), Mike (CMU) Eugene, Cody, Luke, Beni, Alexander A., Simon, and Lubomir (JLab). |
== CDC == | == CDC == | ||
− | - | + | - In the analyses meeting Mike reported already [https://halldweb.jlab.org/wiki/images/b/b5/MStaibCDCEfficiencyS16.pdf his studies] on the CDC efficiency. |
+ | |||
+ | - Beni: Nick and Chris are cleaning/replacing the CDC HVB that had some issues during the last run due to some dust on them. We discussed possible origins of this dust: coming from the cooling tubes, air, or sucked by the magnetic field. | ||
== FDC == | == FDC == | ||
− | - | + | - Simon showed first plots about implementing the drift time in the FDC tracking. |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | - | + | - Lubomir studied the magnetic field effects with Garfield and showed that the effect of the avalanche deflection along the wire is equivalent to a wire rotation (of about 10deg for our field) w.r.t. avalanche position. The effect on the time-to-distance relation is equivalent to about 10% increase in the time scale. |
− | - | + | - Lubomir showed GENFIT results about the FDC resolution in magnetic field (all results so far presented were without magnetic field): there's strong dependence on momentum and is better than 200 microns at high momenta. There's more work needed on the alignment as seen from some systematics in the residuals shown above. |
Latest revision as of 19:36, 18 November 2016
July 14, 2016 Drift Chamber meeting
Connection
- Instructions for Bluejeans meeting connection
- Meeting ID: 290664653
Headline text
- To join via a Web Browser, go to the page [1] https://bluejeans.com/290664653.
Agenda
- Detector updates
- CDC update (Naomi/Mike/Beni)
- FDC update (Simon/Lubomir/Alex)
- First look using standard fitting code using FDC drift times
- Electron deflection in B field Garfield: perp. to wire, at 16deg., MC at 16deg., genfit results
- Drift time in B field genfit results
- Resolutions with genfit Momentum distributions,vs momentum, wire resolution
- Some systematics: [2], [3]
- NIM Papers
- fADC125 meeting (Naomi, Cody, Beni)
- Other
Minutes
Participants: Sean (NU), Mike (CMU) Eugene, Cody, Luke, Beni, Alexander A., Simon, and Lubomir (JLab).
CDC
- In the analyses meeting Mike reported already his studies on the CDC efficiency.
- Beni: Nick and Chris are cleaning/replacing the CDC HVB that had some issues during the last run due to some dust on them. We discussed possible origins of this dust: coming from the cooling tubes, air, or sucked by the magnetic field.
FDC
- Simon showed first plots about implementing the drift time in the FDC tracking.
- Lubomir studied the magnetic field effects with Garfield and showed that the effect of the avalanche deflection along the wire is equivalent to a wire rotation (of about 10deg for our field) w.r.t. avalanche position. The effect on the time-to-distance relation is equivalent to about 10% increase in the time scale.
- Lubomir showed GENFIT results about the FDC resolution in magnetic field (all results so far presented were without magnetic field): there's strong dependence on momentum and is better than 200 microns at high momenta. There's more work needed on the alignment as seen from some systematics in the residuals shown above.