Implement improved and low energy CSR methods

The formulas to compute the CSR kick that is current used workes only for high energy beams. Better formulas such as D. Sagan's exist and are well tested.

I agree and the expert is @ext-mayes_c

changed title from Implent improved CSR methods to Implement improved CSR methods

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changed title from Implement improved CSR methods to Implement improved and low energy CSR methods

This is the real paper: https://journals.aps.org/prab/abstract/10.1103/PhysRevSTAB.12.040703

@ext-neveu_n @ext-mayes_c : how could we proceed with this?

Chris says this is a better reference: http://accelconf.web.cern.ch/AccelConf/ipac2017/papers/thpab076.pdf

They updated the algorithm.

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assigned to @ext-neveu_n

@ext-mayes_c would that we something that could interests you?

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Alternative https://journals.aps.org/prab/pdf/10.1103/PhysRevAccelBeams.20.064402