|Message: Re: how to add non-uniform M-field and rf EM field||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
I have successfully implemented overlaping time-varying electric and magnetic fields, such as an RF cavity inside a solenoid. Email me if you want the code I use. I just use G4EqMagElectricField and G4ClassicalRK4.
Key point: if an electric field is present anywhere, you must call fieldMgr->SetFieldChangesEnergy(true);
For multiple fields generated by multiple components (e.g. magnets and RF cavities), the GlobalField object I implemented permits the individual components to register their field object and a bounding box; to compute the field at a given point it sums all of the individual fields for registered objects with bounding boxes containing the point. In most cases the conversion from global to loacl coordinates is more expensive than computing the local field, so the bounding boxes are in global coordinates.
|Inline Depth:||Outline Depth:||Add message:|