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Re: [Opal] Size of Dipoles

From: Christof Metzger-Kraus <christof.j.kraus AT gmail.com>
To: "Thomas, Sebastian" <sthomas AT uni-mainz.de>
Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
Subject: Re: [Opal] Size of Dipoles
Date: Tue, 2 Jun 2020 12:07:06 +0200
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Hi Sebastian,

do you know the parameter HAPERT? With it you can define the width of the magnet.

Cheers,

Christof

On Tue, Jun 2, 2020 at 11:57 AM Thomas, Sebastian <sthomas AT uni-mainz.de> wrote:

Hi,

Quick question: Is there a way to manually define the size (i.e. width) of a dipole and its field? As I understand it, the size of the dipole is defined by the bend angle, the length and the Designenergy. Which makes perfectly sense.

But in my case right now I want to put three dipoles in succession to build a chicane for injection into an ERL. It looks like the picture attached.

Now, when I define the dipoles with the higher energy of the recirculating beam, the fields get way to wide and mess with the Injection line (coming from the right). When I define the dipoles with the energy of the injection, they are small enough, but I also have to change the angle and thus my beamline gets messed up. Thus, my question about manually resizing the dipoles.

I hope, I was able to make myself somewhat clear. Thanks for reading this and maybe answering!

Cheers

Sebastian

[Opal] Size of Dipoles, Thomas, Sebastian, 06/02/2020
- Re: [Opal] Size of Dipoles, Christof Metzger-Kraus, 06/02/2020