1. NPS Layout on SHMS Carriage: Sweep Magnet
WACS H(g, g p), Wide angle H(g, p0p)
DVCS H(e,e’ g)p, Deep H(e,e’ p0)p
Proton to HMS
PbWO4 g-
e– to HMS
January 28, 2019
NPS C. Hyde

2. Sweep Magnet replaces SHMS Horizontal Bender
Looking upstream
g-aperture extends to 2° from beam line.(at smallest angle setting)
Ready for power, cooling
Magnetic field mapper constructed at ODU
January 28, 2019
NPS C. Hyde

3. More Photos Water cooling in test-lab limited to 200A
~20% of full power
January 28, 2019
NPS C. Hyde

4. Magnet Mapper. XYZ motor control
ODU graduate student Mitch Kerver at the controls
Hall Probe recording now added
January 28, 2019
NPS C. Hyde

5. Status of Project Construction: Path to completion
Progress to completion: 90%
Magnet complete
Stand for SHMS Platform required
Design completed(?), construction?
Path to completion
Test water flow
Continuity tests done?
Map magnetic field at 20% strength
Mapper construction 90% complete
Hall Probes available at ODU & JLab
Software to control mapper motion and record data complete
Move to Hall C and map field at full strength
Estimated completion time
August 2019 (pending access to Hall, power, cooling, etc)
January 28, 2019
NPS C. Hyde

6. Sweeper Magnet to-do list
Raise magnet 8-12 in (match to design for stand)
Fabricate Hall-Probe Bracket
Bring mapper to Test Lab for “dry-run” without magnet power.
Return to ODU for any adjustments/refinements
Energize magnet in Test Lab
Establish safe field perimeter
What are protocols for user control?
Map field in sweep-gap and beam-gap
Transfer magnet and power supply to Hall C
Energize to full field and map, especially in beam-gap.
January 28, 2019
NPS C. Hyde