1. Hall “12 GeV”
May 27, 2003
NAPP 2003: J.J. LeRose

2. May 27, 2003
NAPP 2003: J.J. LeRose

3. New equipment to meet experimental needs:
In addition to the existing equipment:
HRS pair
BigBite
Beamline instrumentation (BCM’s, BPM’s, Polarimeters, …)
...
Large Acceptance Moderate Resolution Magnetic spectrometer (MAD)
Large Acceptance, High Resolution Photon Calorimeter
ΔΩ ~ 0.1 sr.
676 PbF2 Crystals (26 x 26 x 200mm3)
May 27, 2003
NAPP 2003: J.J. LeRose

4. RCS Setup
May 27, 2003
NAPP 2003: J.J. LeRose

5. Spectrometer Requirements
ΔΩ ~ 30 msr at 35° (~ 15 msr at 15°)
Momentum Acceptance:
Maximum Central Momentum: ~ 8 GeV/c
Minimum Scattering Angle: 12-15°
reduced ΔΩ at smaller angles
Moderate Resolutions:
~0.3% in momentum
~1 mr (~3 mr) in horizontal (vertical angles)
May 27, 2003
NAPP 2003: J.J. LeRose

6. The MAD Medium Acceptance Device
2 combined function magnets:
Quadrupole + Dipole
Field components are independently tunable  versaltility
~30º bend ( )
Adjustable initial drift provides smaller scattering angles at reduced ΔΩ
May 27, 2003
NAPP 2003: J.J. LeRose

7. May 27, 2003
NAPP 2003: J.J. LeRose

8. δ resolution at 6 GeV/c
May 27, 2003
NAPP 2003: J.J. LeRose

9. Angular resolution at 6 GeV/c
May 27, 2003
NAPP 2003: J.J. LeRose

10. May 27, 2003
NAPP 2003: J.J. LeRose

11. Detector Package Scintillators Drift Chambers Gas Čerenkov
Aerogel Čerenkov
Electromagnetic Calorimeter
Focal Plane Polarimeter
May 27, 2003
NAPP 2003: J.J. LeRose

12. MAD Detector Configurations
Leptons
Hadrons
MAD Detector Configurations
May 27, 2003
NAPP 2003: J.J. LeRose

13. Hall 12 GeV
Versatile collection of instruments are planned addressing a broad spectrum of interesting Physics.
Much more detail is available
See:
May 27, 2003
NAPP 2003: J.J. LeRose

14. Inclusive Structure Measurements
May 27, 2003
NAPP 2003: J.J. LeRose

15. May 27, 2003
NAPP 2003: J.J. LeRose

16. Semi-Inclusive Processes
May 27, 2003
NAPP 2003: J.J. LeRose

17. Mad @ 12 deg. Hrs @ 12deg for pi’s 11 GeV Beam 30 cm LH2 (LD2) target
Left Panel:
12 deg. 12deg for pi’s
11 GeV Beam
30 cm LH2 (LD2) target
Right Panel:
Semi-inclusive asymmetry measurements with polarized NH3 and 3He targets
May 27, 2003
NAPP 2003: J.J. LeRose

18. Exclusive Processes
May 27, 2003
NAPP 2003: J.J. LeRose

19. Hadrons in the Nuclear Medium Charm Production Near Threshold
Left: Study of correlations at x>1 onset of scaling. Dotted= Mean field prediction (nocorrelations), Solid= 2-body correlations, dashed 2 and multi-body correlations.
May 27, 2003
NAPP 2003: J.J. LeRose

20. “12 GeV” Beam in Hall A * really 11 GeV May 27, 2003
NAPP 2003: J.J. LeRose

21. May 27, 2003
NAPP 2003: J.J. LeRose