MAD-X
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MethodicalAcceleratorDesign
MAD-X repository
Reported by Leon: With large px the vertical equilibrium emittance should not be zero due to the B component orthogonal to actual particle direction. Leon observed: - EMIT does not...
Using MAD-X 5.08 and tapering for the FCC-ttbar lattice introduces some optics-beating. It increases if the number of RF-sections decreases (while keeping the total voltage constant). This is not the...
The command below shows that quadrupole has two parameters related to fringe "kill_ent_fringe" and "kill_exi_fringe". Setting them true, I assume, means no fringe for specific quadrupole in PTC tracking. However,...
Hello, I'm using TWISS with the option CHROM in a beam line with dipoles tilted by 90° so that it bends vertically. The result I obtain for the first synchrotron...
If onepass is NOT used the closed orbit is subtracted before writing to the file. The problem is that it is always the closed orbit at the start of the...
**Missing feature in MAD-X:** A way to introduce intentional misalignments of elements. **Proposal:** Add attributes to every element that enables that: x_offset y_offset phi_offset psi_offset theta_offset The physics will be...
Hello, I believe there is an error in the user's guide at eq. 1.12 concerning the multipolar expansion (section 1.6 p17). The `n ^ (n-1)` should be replaced by `n!`....
Bend slicing transfers the fringe fields to DIPEDGE elements at entry and exit. In case of thick slices, the twiss results should ideally remain unchanged. As can be seen with...
Presently tracking cannot handle SEXTUPOLE elements. They need to be transformed in thin MULTIPOLE element. Since many lattices such as FCC have thick sextupoles, it would be convenient to handle...
It appears that the makeendmarkers option for makethin is not documented in the User's guide. Also, the documentation currently states that "inactive elements are instead sliced so there is a...
