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# Release Notes for [OPAL 2.4](https://gitlab.psi.ch/OPAL/src/milestones/27)
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## [Bugfixes in OPAL 2.4.0](https://gitlab.psi.ch/OPAL/src/issues?scope=all&utf8=%E2%9C%93&state=closed&label_name[]=Bug&milestone_title=OPAL%202.4.0)
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* Fix infinite loop with `DISTRIBUTION, CUTOFFPZ = 0` (#409)
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* Fix for segmentation fault in FromFile due to RASTER=TRUE (#465)
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* Fix format of _ElementPositions.sdds files (#468)
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* Fix closed orbit finder (part of #285)
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* Fix for reading fields in H5Block format (#316, #577)
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* Fix ascii2h5block (#469)
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* Fix for `VALUE` command (#480)
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* Fix crash `BEAM` without particles (#490)
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* Fix exception for `TRACKBACK = TRUE` with a traveling wave structure (#494)
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* Fix for OrbitThreader (#509, #573)
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* Fix for pressure data reading (#513)
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* SAAMG fixes (#541, #542, #543)
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* Fixes for multicharged particle in Opal-T (#544, #545, #569)
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* Fix infinite loop when `DESIGNENERGY` not specified in bends (#546)
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* Fix for Autophasing (#568)
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* Fix for `MINBINEMITTED `and `MINSTEPFORREBIN `options (#571)
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* Fix for `SOURCE` element (#572)
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* Clang and MacOS compiler issues (#476, #483, #484, #485, #487, #488, #489, #512, #526, #527, #531)
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* [Large code cleanup](https://gitlab.psi.ch/OPAL/src/issues?scope=all&utf8=%E2%9C%93&state=closed&label_name[]=Cleanup&milestone_title=OPAL%202.4.0)
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## [New features in OPAL 2.4.0](https://gitlab.psi.ch/OPAL/src/issues?scope=all&utf8=%E2%9C%93&state=closed&label_name[]=Feature%20request&milestone_title=OPAL%202.4.0)
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* MultiGauss distribution for microbunched beams (#470)
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* AMR (Adaptive Mesh Refinement, #496)
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* Data file no longer required for `SAMPLER` and `OPTIMIZER` (#239)
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* DKS was removed (#523).
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* `SOURCE` element can be made `TRANPARENT` for backtracking particles (#579)
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## Input file related changes
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* The unit of the attributes `FMLOWE` and `FMHIGHE` in the cyclotron command is changed from MeV to GeV (!364)
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* The number of particles has to be equal in `BEAM` and `DISTRIBUTION` commands (#558)
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* Fix for `DISTRIBUTION` momentum input (`SIGMAPX`, `SIGMAPY`, `SIGMAPZ`) when `INPUTMOUNITS= EV`. Changed from kinetic energy to momentum (as supposed to) (#475)
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* Elements positioned with `X`, `Y`, `Z` are now placed relative to the beamline instead of absolute coordinates (#578)
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## Output file related changes |
