CEA Codes forum

Dear Wai-Ming,

I also wish you a Happy New Year.
Don't worry about this message. If you save your project, it should not reappear.

Regards,

Didier

Dear Changqiang_ciae, That's exactly right, in tracking mode, when you use field maps that curve the central trajectory the space charge is not calculated. This is a much more complex development than the usual space charge in rectiligne frame and it has not yet been carried out and implemented. Pro...

Dear Michele,

1) DTL_CEL is considered as an element and not as a sequence of these individual parts.
2) Normally, a quadruple error consistently applied to the last quadruple of DTL_CEL(n) and the first half quadruple of DTl_CEL(n+1)

Best Regards,

Didier

Dear Wai-Ming, First of all, the best way is obviously to use a real rebuncher field map. The field map example given by Jonathan is just a simple way to replace the use of the usual GAP element which could have problems due to too large transverse beam divergences. So seeing a discontinuity, which ...

Dear Wai-Ming,

I'm not sure to undestand your question. Anyway, in all case field_map Tools from "Charts" tab-sheet allows to visualize the field shape used for computation.
For example the Janathan's map:
FIELD_MAP 100 .1 -90 30 1 1 0 0 test
Regards,

Didier

GenLinWin release 2.7.5.1

http://irfu.cea.fr/dacm/logiciels/download.php

Hi,

Yes, Jonnathan is right, this could work using the GAP element, only if the transverse divergences of the beam are not too big. This problem is caused by the thin gap RF model used in TraceWin.

Regards,

Didier

TraceWin release 2.16.6.1


http://irfu.cea.fr/dacm/logiciels/download.php

Dear Seunghyun, betZdp/p(mm/pi mrad) = betZdp/p(mm/pi %) / 10 Another point, I don't know your structure file, so I don't know if it's possible in your project, but I suggest you replace DIGA_TWISS by several DIAGs such as DIAG_DSIZE2 and DIAG_DSIZE3 located on the first 5 or 6 periods. Firstly, it ...

TraceWin release 2.16.6.0

http://irfu.cea.fr/dacm/logiciels/download.php