Pelle,

Actually I sent to Norman many detailed field maps with fringe fields 
extending to 150 cm from
the center of the magnet. The only shortcoming of our field maps is that 
they all are generated
in mid plane, but they are Bx, By, Bz for (X, Z) plane at Y=0. I raised 
this question many times if
we need real 3D field map in space but never got answer. I even think 
this extended map never
was tested. Tracking people should clearly say what they need.

Stepan

On 3/5/14 3:17 PM, Hansson Adrian, Per Ola wrote:
> On Mar 5, 2014, at 12:10 PM, McCormick, Jeremy I. <[log in to unmask]> wrote:
>
>> Hi, Holly.  Thanks for the reply.
>>
>> What is the format of the field map in GEMC and how was it created?  Which B-field components does it include, e.g. is it only a measurement in one plane that has been extended to 3D?
>>
>> Yes, it probably would be useful to dump that out into a text file.  It could be put into hps/java/sandbox if it is not too incredibly large of a file.
>>
>> BTW, does anyone know what these files in the SVN represent?
>>
>> ./hps-java/src/main/resources/org/lcsim/hps/calib/proposal2014/FieldMap/bfieldmap.dat
>> ./hps-java/src/main/resources/org/lcsim/hps/calib/testrun/FieldMap/bfieldmap.dat
> This last one is what we use for the test run in e.g. extrapolations in fringe regions. I think it’s the only one we have for this magnet which will also be used for the full run.
>
> /Pelle
>
>
>> What detector geometries would they be compatible with, if any?  Could they be used directly for benchmarking purposes?
>>
>> —Jeremy
>>
>> On Mar 5, 2014, at 10:40 AM, Holly Vance <[log in to unmask]> wrote:
>>
>>> Hi Jeremy,
>>>
>>> We have a 3D field map in GEMC right now. We have also implemented all detectors (minus the SVT, at the moment...). This can be exported to SLIC. I could also just send you the field maps. I wasn't sure if this helps you.
>>>
>>> Holly
>>>
>>>
>>> On Wed, Mar 5, 2014 at 1:34 PM, McCormick, Jeremy I. <[log in to unmask]> wrote:
>>> Hi,
>>>
>>> Anyone know what’s the status on the 3D magnetic field work?  Is there a detector model which uses a full 3D field?
>>>
>>> I’d like to do some performance benchmarking in SLIC using this…
>>>
>>> —Jeremy
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