Search found 101 matches

by JapanBruce Yee
Mon 22 Dec 2025 05:54
Forum: TraceWin
Topic: 4D & 6D emittance by errors study
Replies: 8
Views: 4192

Re: 4D & 6D emittance by errors study

Dear Didier, Thanks for your recommendations. I updated to 2.25.2.4. TW_version.png I attached the results of a short run. (I removed the last lines of the file where the type of errors is printed out). 1) The title of the last column is "Emit_6D/Emit0_4D-1" 2) The runs 7 (line 9) and 15 (last line)...
by JapanBruce Yee
Fri 19 Dec 2025 08:08
Forum: TraceWin
Topic: 4D & 6D emittance by errors study
Replies: 8
Views: 4192

Re: 4D & 6D emittance by errors study

Dear Didier, Regarding the 6D emittance for the error studies, as Dr. Comunian pointed out, it is expected that the 6D emittance is preserved even when some transfer occurs in the planes. However, I simulated an error case, asking for the results to be compared against the ideal case (Beam reference...
by JapanBruce Yee
Thu 11 Dec 2025 08:27
Forum: TraceWin
Topic: Error studies in multipoles
Replies: 2
Views: 119

Re: Error studies in multipoles

Dear Didier,

Thank you very much for your help,

Best regards,

Bruce
by JapanBruce Yee
Wed 10 Dec 2025 05:16
Forum: TraceWin
Topic: Error studies in multipoles
Replies: 2
Views: 119

Error studies in multipoles

Dear Didier,

Currently, I am using the element "Multipole" to simulate as a kicker. I want to make an error study (similar to a Quad error) of the multipole (KICKER).
Do you have a suggestion on how to implement static error in the multipole?

Thanks for your help and time,

Bruce
by JapanBruce Yee
Mon 20 Oct 2025 08:56
Forum: TraceWin
Topic: Beam extraction line: quadrupole offset
Replies: 6
Views: 799

Re: Beam extraction line: quadrupole offset

Dear Didier,

Thank you very much for your advice.

CHFRAM makes the work.
Picture9.png
Picture9.png (56.88 KiB) Viewed 761 times
Best regards,

Bruce
by JapanBruce Yee
Fri 17 Oct 2025 08:48
Forum: TraceWin
Topic: Beam extraction line: quadrupole offset
Replies: 6
Views: 799

Re: Beam extraction line: quadrupole offset

Dear Didier,

I attached the files.

Best regards,

Bruce
by JapanBruce Yee
Fri 17 Oct 2025 08:45
Forum: TraceWin
Topic: Beam extraction line: quadrupole offset
Replies: 6
Views: 799

Re: Beam extraction line: quadrupole offset

Dear Didier, Thank you very much for your advice. Sorry for taking advantage of your kindness, but may I ask something else? After the quadrupoles, I have a septum magnet to extract the beam (and I am planning to simulate the full transport line from the septum) As shown in the figure. Picture6.png ...
by JapanBruce Yee
Thu 16 Oct 2025 06:59
Forum: TraceWin
Topic: Beam extraction line: quadrupole offset
Replies: 6
Views: 799

Beam extraction line: quadrupole offset

Dear Didier, Thanks for your help and support. I am currently designing a beam extraction line consisting of a pulse bending followed by a doublet quadrupole. As shown in the next figure: Picture1.png The quadrupoles belong to the main line; therefore, the extracted beam will present a relative offs...
by JapanBruce Yee
Thu 4 Sep 2025 10:56
Forum: TraceWin
Topic: Rectangle and Sector bending magnet and K1 and K2 contribution
Replies: 7
Views: 63664

Re: Rectangle and Sector bending magnet and K1 and K2 contribution

Dear Didier, I apologize for the delayed response and appreciate your confirmation. The confusion stems from my comparison of sector bending definitions used in SAD (the beam optics codes developed at KEK, which are similar to MAD-X at CERN). I am attempting to reproduce results from a SAD model tha...
by JapanBruce Yee
Thu 28 Aug 2025 07:25
Forum: TraceWin
Topic: Rectangle and Sector bending magnet and K1 and K2 contribution
Replies: 7
Views: 63664

Re: Rectangle and Sector bending magnet and K1 and K2 contribution

Dear Didier, Thanks for your feedback. Please allow me to ask about Sector bending. Using the following description: EDGE Angle/2 Ldip/(Angle*3.14159/180) 100 1e-8 1e-8 150 0 BEND Angle Ldip/(Angle*3.14159/180) 0 150 0 EDGE Angle/2 Ldip/(Angle*3.14159/180) 100 1e-8 1e-8 150 0 I obtained the next rec...