how to add a quadrupole magnetic field to geant4?

[WeiWangHUST]

How do I add a quadrupole magnetic field to geant4?Can you give me a simple example to study?
thanks!

[zhaozhiwen]

gemc can do dipole and quadrupole field with analytic calculation
You just need make a field dat file, see examples at

https://github.com/gemc/detectors/blob/master/eic/field/det1_ele_downstream_quadrupole1_simple.dat
https://github.com/gemc/detectors/blob/master/eic/field/det1_ele_downstream_dipole1_simple.dat

[WeiWangHUST]

I'm a beginner. How do I add it to my model? thank you

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------------------ 原始邮件 ------------------ 发件人: "zhaozhiwen"<[email protected]>; 发送时间: 2019年10月28日(星期一) 晚上9:57 收件人: "gemc/source"<[email protected]>; 抄送: " "<[email protected]>; "Author"<[email protected]>; 主题: Re: [gemc/source] how to add a quadrupole magnetic field to geant4?(#165) gemc can do dipole and quadrupole field with analytic calculation You just need make a field dat file, see examples at https://github.com/gemc/detectors/blob/master/eic/field/det1_ele_downstream_quadrupole1_simple.dat https://github.com/gemc/detectors/blob/master/eic/field/det1_ele_downstream_dipole1_simple.dat — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[zhaozhiwen]

It's like any field in gemc. You probably need to learn how to use GEMC first. see example of clas12 gcard at https://gemc.jlab.org/gemc/html/documentation/runningJLab.html

[WeiWangHUST]

gemc can do dipole and quadrupole field with analytic calculation
You just need make a field dat file, see examples at

https://github.com/gemc/detectors/blob/master/eic/field/det1_ele_downstream_quadrupole1_simple.dat

Can you help me add a quadrupole field to B1 of G4

[zhaozhiwen]

talking through github is not effective for this. I suggest you ask someone nearby to understand how to use gemc first.

[WeiWangHUST]

talking through github is not effective for this. I suggest you ask someone nearby to understand how to use gemc first.

ok, thanks for your help!