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Yes, the map we use is a simplified version of the one you sent I think. And yes, we haven’t answered the question what we really need, there are people assigned to answer that question though.

/Pelle



On Mar 5, 2014, at 12:28 PM, Stepan Stepanyan <[log in to unmask]> wrote:

> 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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>>>> Holly
>>>> 
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