fix: ring phase advances in computeRDT.m #652
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fix bug when the length of last element is not 0.
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@wei0852 : That looks correct for me. I do not know why the tests don't run, but it's not critical. @simoneliuzzo: can you confirm that the fix is correct? |
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The tests are now running (no explanation). If there is no objection, I'll merge tomorrow. |
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looks ok also for me |
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OK for merging, thanks @wei0852 |
lnadolski
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Oct 25, 2023
# By Laurent Farvacque (14) and others # Via GitHub * master: (28 commits) Add passive beamloading cavity (#586) Create BndStrMPoleSymplectic4RadPass (#665) Documentation fixes (#669) Update of the build process (#659) New Matlab function atsimplering (#657) Collective bugfix (#664) Correct the attribute name of solenoids in Matlab (#663) Error parsing args for twiss_in and r_4d (#662) Fix atmaincavities (#656) Fix attribute names in Simple Ring (#655) Remove collective passes from internal lattice_pass (#650) The DPStep keyword in linopt6 raises an error for 4D lattices (#651) Bug fix in atdisable_6d: keep the Energy field in cavities. (#654) fix: ring phase advances in computeRDT.m (#652) Correct the axis definition in plot_sigma (#648) Don't automatically cache the location of RF cavities (#640) Simple ring model (#643) Correct Dipole tapering (#623) Chromatic functions extended (#644) Repair the Matlab tests (#645) ... # Conflicts: # atmat/Contents.m # atmat/atphysics/Radiation/atdisable_6d.m # atmat/atphysics/Radiation/atenable_6d.m # atmat/lattice/at2str.m # atmat/pubtools/create_elems/atidtable_dat.m # pyat/at/lattice/elements.py # pyat/at/lattice/lattice_object.py # pyat/at/physics/matrix.py # pyat/at/physics/radiation.py # pyat/examples/CollectiveEffects/RobinsonInstability.py
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Mux and Muy in computeRDT.m were actually the phases at the entrance of last element.
When the length of the last element is not zero, the computation of ring phase advances is wrong.
As a consequence, tune shifts and RDTs that are not calculated from the 1st element are wrong.
For example: