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MONI question - beam position monitor

Posted: 14 Apr 2009, 13:56
by dturner
For a MONI element, where along its length L are the x and y positions assumed to be? The MAD documentation states for a BPM of non-zero length L, the beam position is taken to be at the center of the element (L/2). Does this remain true for elegant?

Re: MONI question - beam position monitor

Posted: 14 Apr 2009, 14:03
by michael_borland
In elegant, the monitor readout is the beam position at the end of the element, not the center.

Normally, I use zero-length monitors to avoid confusion.

--Michael

Re: MONI question - beam position monitor

Posted: 14 Apr 2009, 14:14
by dturner
So, it looks like we should use a zero-length MONI and then DRIF elements on either side to represent the actual BPM can.

Sounds good to me. Thanks a bunch!

Dennis