Schematic of the SHMS in Hall C at 12 GeV
SHMS design parameters
Central Momentum:2 to 11 GeV/c
Momentum Acceptance:
-10% < δ < +22%
Momentum Resolution:
0.03%-0.08%
Scattering Angle:
5.5 to 40°
Vertex Length (90deg):
30cm
Horizontal acceptance:
+- 24mrad
Vertical acceptance:
+- 55 mrad
Solid angle acceptance:
5.0 msr
Horizontal resolution (YPtar):
0.5-1.2 mrad
Vertical resolution (XPtar):
0.3-1.1 mrad
Vertex length res (Ytar):
0.1-0.3 cm
Hall C 12GeV Upgrade
Recent changes to SHMS design
Momentum acceptance changed -10% to +22%, and the lab scattering angle increased to 40°.
Current SHMS studies and R&D
To date, the 12 GeV PAC has met twice and fully approved 5 experiments for Hall C. Experiment proposals submitted to PAC30 (2006) and the proposals submitted to PAC32 (2007)
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Hall C 12 GeV Document Database (including official figures, password required)
The document database contains all documentation associated with the Hall C 12 GeV upgrade including detector and SHMS R&D work. The Hall C Public Document Database lists public interest Hall C and 12 GeV documents.
The beam sizes at different z-locations in the SHMS detector hut for the design of the SHMS detectors.
Information about the design of the SHMS collimator to define the acceptance.
Information about the prototype test performed in 2006 and the results of the simulation.
Report on the contribution of backgrounds at 12 GeV in Hall C and the SHMS shield house design.
SHMS Users Group
SHMS Users' Group is currently being formed and will coordinate JLab and user involvement in the construction, comissioning, and understanding of the SHMS.
Other 12 GeV links
- Information about the MC
- Drawing of the Layout (M. Fowler)
- Information about the upgrade
- Presentation from the Hall C 12 GeV meeting
- Presentation from the Hall C 12 GeV meeting