Momentum aperture and Touschek lifetime -pelegant
Posted: 11 Feb 2013, 07:03
Dear Michael,
Recently I've started using elegant and also parallel elegant set up on the grid for the storage ring calculation. I have a problem with calculating Touschek lifetime by using output files for momentum aperture and Twiss parameters calculating by pelegant (using 4 nodes). Namely, when I use a touschekLifetime script for calculation, the error occurs and it says that those 2 input files don’t match ?? This I tried on the windows version. On the linux version it doesn’t work either but there it claims that it cannot read layout (“Unable to read layout--no header lines found (SDDS_ReadLayout)”).
Next step I did, I calculated the momentum aperture using the same scripts by using elegant on my computer, but it takes a lot of time. This time I could calculate the Touschek life time. Looking into output for momentum aperture for both cases, I have noticed that for the pelegant the output is unsorted and maybe this is the reason that while calculating Touschek lifetime the error occures . Do you know how to fix this problem?
Please find also attached files of momentum aperture and Twiss parameters obtained by elegant (momap.mmap, momap.twi) and by pelegant (momap1.mmap, momap1.twi) additionaly the lattice file (ring531.lte) and the momap.ele script that was used for those calculation.
Best regards,
Adriana
Recently I've started using elegant and also parallel elegant set up on the grid for the storage ring calculation. I have a problem with calculating Touschek lifetime by using output files for momentum aperture and Twiss parameters calculating by pelegant (using 4 nodes). Namely, when I use a touschekLifetime script for calculation, the error occurs and it says that those 2 input files don’t match ?? This I tried on the windows version. On the linux version it doesn’t work either but there it claims that it cannot read layout (“Unable to read layout--no header lines found (SDDS_ReadLayout)”).
Next step I did, I calculated the momentum aperture using the same scripts by using elegant on my computer, but it takes a lot of time. This time I could calculate the Touschek life time. Looking into output for momentum aperture for both cases, I have noticed that for the pelegant the output is unsorted and maybe this is the reason that while calculating Touschek lifetime the error occures . Do you know how to fix this problem?
Please find also attached files of momentum aperture and Twiss parameters obtained by elegant (momap.mmap, momap.twi) and by pelegant (momap1.mmap, momap1.twi) additionaly the lattice file (ring531.lte) and the momap.ele script that was used for those calculation.
Best regards,
Adriana