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Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields

From: "Montag, Christoph" <montagc AT bnl.gov>
To: "Palmer, Robert" <palmer AT bnl.gov>, "Christie, William" <christie AT bnl.gov>, "E-rhic-ir-l AT lists.bnl.gov" <E-rhic-ir-l AT lists.bnl.gov>
Subject: Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields
Date: Thu, 26 Jul 2018 01:08:14 +0000

The "stepped straight" option looks very attractive. I hope Brett can chime in on those 30cm between the two individual magnets.

The horizontal electron beta of 522m at the crab cavities seems unnecessarily large. The electron beam energy is a factor 15 smaller than the proton energy. We should be able to reduce that to 200m or so in the interest of reducing the chromaticity.

The proton beta at the crabs seems too small, but I guess that can be increased.

Christoph

P.S.: I will not be able to attend the meeting on Friday

From: E-rhic-ir-l <e-rhic-ir-l-bounces AT lists.bnl.gov> on behalf of Palmer, Robert <palmer AT bnl.gov>
Sent: Wednesday, July 25, 2018 8:50:51 PM
To: Christie, William; E-rhic-ir-l AT lists.bnl.gov
Subject: Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields

Current options for early forward IR magnets with lower required pole tip fields.

Bob

Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields, Palmer, Robert, 07/25/2018
- Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields, Montag, Christoph, 07/25/2018
  - Re: [E-rhic-ir-l] IR slides of forward IR with lower pole tip fields, Palmer, Robert, 07/27/2018