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[Opal] Is specifiying a fieldmap for cavities mandatory?

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  • From: "Thomas, Sebastian" <sthomas AT>
  • To: "opal AT" <opal AT>
  • Subject: [Opal] Is specifiying a fieldmap for cavities mandatory?
  • Date: Tue, 21 Jan 2020 14:44:20 +0000
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Dear all,

I have problems with implementing cavities in my models. Attached is a "minimal" example that raises following error:


User error detected by function "Fieldmap::readHeader()"

File " " doesn't exist

File " " doesn't exist


I specified no fieldmap for the RFCAVITY. I thought that in this case, a default map should be used by OPAL. Is OPAL having trouble to find that default map? I tried OPAL 2.0 (build from source) as well as OPAL 2.2 (sourced binary). The error above stops OPAL, so I kind of need to get rid of it.

Thanks in advance for your help!



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