Elegant users forum

Hi, Michael, I have four quadrupoles in my beam line. If I want to constraint the beam size <2mm at last of the beamline by adjusting the four quadrupoles' strength. How to express the rpn equation? Thank you very much!

If you want to process the .out file, you don't need to split it into separate files for each beamlet. SDDS tools can operate on each page of a multi-page file without any problem. See the attached script. (I used gzip to compress it so the forum software will accept it.) --Michael Hi, Michael, I m...

If you want to process the .out file, you don't need to split it into separate files for each beamlet. SDDS tools can operate on each page of a multi-page file without any problem. See the attached script. (I used gzip to compress it so the forum software will accept it.) --Michael Hi, Michael, as ...

The collimator opening is extremely small (8 microns), so you may have very poor statistics that give invalid calculations. Try increasing the collimator opening. Also, look at the Particles parameter in the .fin file to ascertain if you have a reasonable number (several thousand at least) particle...

Since the software works with larger collimator size, I think the problem is likely to be poor statistics resulting from having too few particles. You might also check whether the range through which you are sweeping the RCOL position is too large. If you move it too far from the beam center, you m...

The collimator opening is extremely small (8 microns), so you may have very poor statistics that give invalid calculations. Try increasing the collimator opening. Also, look at the Particles parameter in the .fin file to ascertain if you have a reasonable number (several thousand at least) particle...

The root of all the problems is that the beam is not upright in phase space at the entrance to the RCOL element. This causes the computations to fail because it violates one of the assumptions of the pepper pot method. When the calculation produces an invalid value (square root of a negative number...

Hi, all I want to measure the beam emittance by pepper-pot. the accesory is my elegant files. when I run it ,I always be puzzled by a question,that is as follows: 1.PNG I don't know where I'm wrong. my inital rms emittance is 1.25e-9, betax=5e-3, p_central=800, so the initial beam size is 2.5um. Is ...

The zip file is empty. --Michael Sorry, Michael, please check out the accesory again. Hi, Michael, I don't know weather you can see my questoins which I pointed out before by pictures . I now repeat my questions again: 1. I can't do parallel computation,the erros as follows: 1.PNG 2.When I do'nt us...

michael_borland wrote:The zip file is empty.

--Michael

Sorry, Michael, please check out the accesory again.