[Halld-physics] Fwd: 1500A and 1200A B-field maps

[Michael Staib]

FYI - Field maps are now available.

Begin forwarded message:

> From: David Lawrence <davidl at jlab.org>
> Subject: 1500A and 1200A B-field maps
> Date: May 20, 2014 at 2:42:25 PM EDT
> To: Michael Staib <mstaib at andrew.cmu.edu>
> 
> Hi Michael,
> 
>  I’ve generated the new 1500A and 1200A field maps with positive polarity and installed them. As with other maps, they are implemented as JANA resources. This means they are stored at some URL and that URL is stored in the CCDB. (This avoids having to store large files in the CCDB directly). You should be able to just run the simulation and reconstruction while setting the map to one of the following and it will automatically download the file.
> 
> solenoid_1500A_poisson_20140520
> solenoid_1200A_poisson_20140520
> 
> Since this depends on entries in the CCDB, you’ll need to use the MySQL version to actually get them. Make sure your JANA_CALIB_URL is set to:
> 
> setenv JANA_CALIB_URL mysql://ccdb_user@hallddb.jlab.org/ccdb
> 
> (Remember to set your CCDB_CONNECTION to the same thing if you want to use the ccdb program for browsing the CCDB).
> 
> 
> In case you need to get at the files directly, they are accessible via the web at the URLs below. Again, you shouldn’t need to do this since any JANA program (including hdgeant) will do this for you automatically.
> 
> https://halldweb1.jlab.org/resources/Magnets/Solenoid/solenoid_1500A_poisson_20140520
> https://halldweb1.jlab.org/resources/Magnets/Solenoid/solenoid_1200A_poisson_20140520
> 
> 
> Finally, if you want to see the config. files and scripts used to generate these and any other field maps, you can check them out from subversion using the following:
> 
> svn co https://halldsvn.jlab.org/repos/trunk/home/davidl/PoissonConfigFiles
> 
> Let me know if you have any questions.
> 
> Regards,
> -David
> 

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