STI Publications - View Publication Form #15793
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Publication Information
| Title | A New Solid Polarized Target for CLAS12 in Hall B | ||||
| Abstract | With Jefferson Lab's upgrade to a 12 GeV electron beam comes a new, improved detector system in Hall B: CLAS12. The dynamically polarized solid target, which was a mainstay of double-polarized scattering experiments in the 6 GeV era, must also be replaced, accommodating the constraints of the new Hall B layout. The new target and its horizontal refrigerator will fit in a space restricted by the new CLAS12 5T solenoid and detector package, making the center of the target sit within a narrow clearance that tapers from 30 to 10 cm in diameter over a length of 2.3 m. The target will dynamically polarize NH3 and/or ND3 in two target cells at 5T and 1K using 140 GHz microwaves, and will provide protons and deuterons polarized to above 90% and 40%, respectively. We present the proposed design of the new polarized target system for Hall B, and discuss the progress and challenges of the project. | ||||
| Author(s) | James Maxwell  |
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| Publication Date | September 2016 | ||||
| Document Type | Meeting | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Technical Support Groups / Cryo/Polarized Targets | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Meeting / Conference
| Meeting Name | SPIN2016 |
| Meeting Date | 9/25/2016 |
| Document Subtype | Invited Talk (proceedings) |
Attachments/Datasets/DOI Link
| Document(s) |
Maxwell_Spin16_proc.pdf
(STI Document)
Maxwell_Spin16_proc.pdf
(Accepted Manuscript)
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| Dataset(s) | (none) |
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