1 / 15

SBS Magnet

SBS Magnet. John J. LeRose. Hall A Collaboration Meeting, June 2010. SBS: a “large” acceptance, small angle, moderate resolution device. 48D48 Basic Geometry. Have had contact with the contact engineer at BNL. The magnet isn’t going anywhere. .

tilly
Download Presentation

SBS Magnet

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SBS Magnet John J. LeRose Hall A Collaboration Meeting, June 2010

  2. SBS: a “large” acceptance, small angle, moderate resolution device

  3. 48D48 Basic Geometry

  4. Have had contact with the contact engineer at BNL. The magnet isn’t going anywhere.

  5. Present Status of the Magnet(s)and Power Supplies • Have made contact with the engineer at BNL who will be our contact for the property transfer. • The magnets are “not going anywhere”. • Power supplies are also available, but old: • Refurbished in the 80’s • Customized controls • Anticipating having funding to move the magnets in October at the earliest, have tentatively planned a trip to Brookhaven in August to check things out in person and start arrangements for the transfer.

  6. Needed Modifications to the Magnet • For small angles at short distance • Cut opening in Yoke • Modify coils • For Polarized Target & background control • Add field clamp to reduce field at target • For beam transport to the dump • Field clamp (again) • Add magnetically shielded beam pipe • Add solenoid

  7. Layout of system with part of yoke removed Field Clamp Shielded Beam pipe Modified Coils

  8. With magnetically shielded pipe with 1kA/cm current density solenoid B at target < 2 Gauss Calculations by StepanMikhailov Using “Mermaid” (units are kG, cm) Nice clean magnetic field

  9. y y’ x’ θ x 1 mm @ 30m Effect on beamline by transverse field is effectively eliminated

  10. Various Views of the Modified Magnet

  11. TOSCA modeling update • Spring 2010: Robin Wines was assigned the task of doing detailed TOSCA modeling of the SBS magnet and the proposed modifications • She is still creating/correcting the TOSCA model • Expect 1st results next week!

  12. Optics It’s really very simple!

  13. This is what it looks like to me!

  14. Expected Performance

  15. Conclusion • Magnet and power supply exist and are available • Magnet will work nicely • with proposed modifications • TOSCA modeling of modifications is ongoing • Will start to actively try to acquire the magnet(s) and power supply(ies) when funding is clearer • Optics are very simple

More Related