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- From: Zhang Hui <hui.zhang AT psi.ch>
- To: Dirk Vandeplassche <dirkvdpla AT skynet.be>, "opal AT lists.psi.ch" <Opal AT lists.psi.ch>
- Cc: "opal-developers AT lists.psi.ch" <opal-developers AT lists.psi.ch>
- Subject: RE: [Opal] Electric field map in BANDRF cyclotron
- Date: Mon, 16 Jun 2025 14:11:50 +0000
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Dear Dirk,
I was transforming ascii file to *.h5part map four years ago. The format of my ascii file looks like the following
nx ny nz nx ny nz nx ny nz x1 y1 z1 Ex1 Ey1 Ez1 x1 y1 z2 Ex2 Ey2 Ez2 x1 y1 z3 Ex3 Ey3 Ez3 …
The original c++ code doing the transformation must be from Andreas. But I am not sure about that.
I would think, that the head could be different. However, the numbers of grids in x, y, y-directions have to be defined in head. And this information has to be correctly transferred into .h5part file.
The .h5part map can be visualized by a program called VisIt. If the .h5part file cannot be opened, or it looks strange, then something must be wrong, in the ascii data, and/or during the transformation.
Best regards,
Hui
__________________________________________ From: opal-request AT lists.psi.ch <opal-request AT lists.psi.ch>
On Behalf Of Dirk Vandeplassche
Dear all,
It would really be very helpful for me to obtain a detailed description of the ASCII-version of the electric field map to be used in a BANDRF-type cyclotron. I am especially interested in the header of this file, hoping that it may solve the error in OPAL "Couldn't determine type of fieldmap in file “efield.h5part””. The conversion from the ASCII file to the binary file with the “ascii2h5block” tool seems to work well — anyway it does not give any error message and returns a correct number of data with a header like
0 101 101 61 0.0005 0.0005 0.0001 -0.025 -0.025 -0.003 502.1066965 342.215468 -1294.568941 …
Its output is
Combine efield2.txt and to efield2.h5part Frequency 7.2615e+07 [Hz] H5block grid H5gridPx 101 H5gridPy 101 H5gridPz 61 number Edata 622261 gridPx 101 stepEx 0.0005 gridPy 101 stepEy 0.0005 gridPz 61 stepEz 0.0001 number Bdata 0 Done bye ...
Any hint that may solve the problem is welcome !
Many thanks in advance, Dirk Vandeplassche
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-
[Opal] Electric field map in BANDRF cyclotron,
Dirk Vandeplassche, 06/16/2025
-
RE: [Opal] Electric field map in BANDRF cyclotron,
Zhang Hui, 06/16/2025
- RE: [Opal] Electric field map in BANDRF cyclotron, Daniel Winklehner, 06/16/2025
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RE: [Opal] Electric field map in BANDRF cyclotron,
Zhang Hui, 06/16/2025
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