1. 12-GeV Upgrade of Hall-C: Project Scope and Status
Howard Fenker
12GeV Control Account Manager

2. Outline Hall-C Upgrade Goal of the Upgrade; Specifications
Scope of Work and Cost Breakdown
Main Components: Magnets, Detectors, Infrastructure
Previous Reviews
Design Reviews
Project Reviews
Technical
Cost & Schedule
Safety
Installation & Planning
Readiness Reviews (magnets done and magnets planned)
Status and Remaining Work
Summary

3. Hall-C Evolution for 12 GeV
Hall-C was originally constructed to house the 6-GeV High Momentum Spectrometer (HMS) and the 1.7-GeV Short Orbit Spectrometer (SOS).
Since 1995, many experiments have made good use of the features and stability of the HMS.
HMS
e- beam
SOS
Hall-C with HMS and SOS
(6-GeV Configuration)

4. Extend the Physics Reach to 11 GeV
To Upgrade Hall-C… build a 11 GeV/c Super-High-Momentum Spectrometer (SHMS)
Retain Key Features of HMS:
Pivot
Rail System
Point-Point Optics Design
“Flat” Acceptances
Shield House
Redundancy in Detectors
Incorporate them in the SHMS to Provide:
Pair of magnetic spectrometers
Full momentum capability
Large acceptance
Angle accuracy and reproducibility
Small angle capability
Very good particle identification
Compatibility with all target configurations
HMS
e- beam
SHMS
Hall-C with HMS and SHMS
(12-GeV Configuration)

5. Hall C: SHMS Design Parameters
Range of Central Momentum
2 to 11 GeV/c for all angles
Momentum Acceptance 
-10% to +22%
Momentum Resolution
% (<0.2%)
Scattering Angle Range
5.5 to 40 degrees
Solid Angle Acceptance
>4.5 msr for all angles (>4.0)
Horizontal Angle Resolution
mrad
Vertical Angle Resolution
mrad
Vertex Length Resolution cm
Tracking Rate Capability
5 MHz
Beam Capability
Up to 90 µA, 11 GeV beam
Protection from
Hazards: Magnetic, Cryogenic, Fall, etc.
Angle Changes
Rapid, Remote, Reproducible

6. Hall C 12 GeV Upgrade – Scope
Spectrometer Magnets (incl. Cryo Interfaces, DC Power, Controls)
Detectors (most provided by Users)
Computing (In Counting House: Servers & Terminals)
Electronics: DAQ Modules, Crates, Cables
Beamline
Moeller Polarimeter: Collimator mods, Power to 2nd Large Quadrupole
Arc Magnets Mapping (beam energy measurement)
Scattering Chamber Window Upgrade
Beampipe and Stands
Infrastructure
Support Structure, Shield House
Vacuum, Cryogenics, Cables, Utilities, Safety
Installation
Magnet Testing; Commissioning with Beam

7. Hall-C 12-GeV Project Scope
Dipole Q3 Q2 Q1 HB
Magnet Power Supplies
Cryogenics Distribution
Concrete Shield House
Removable Roof
Steel Support Structure
Axis of Rotation
Data-Acquisition Computers, Controls & Instrumentation
in Shielded Room
Rail
Target
Electron Beam
Particle Detectors
Also: Beamline Vacuum, Mods to Moller, Compton,
Scattering Chamber

8. Hall C 12 GeV Upgrade – $$ Distribution

9. ✔ ✔ SHMS Magnets HB (Horizontal-Bend Dipole) Superferric “C” magnet
2.6 Tesla
21 cm x 25 cm warm bore
0.75 m EFL
1.93 Tm
19 % design margin
220 kJ stored Energy
SC is SSC outer cable ✔
Dipole
3.86 Tesla Cosine(Θ) dipole
60 cm warm bore
2.85 m EFL
11.2 Tm Integral B.dL
10 % Test margin
13.7 MJ stored Energy
4800 A/cm^2
11 GeV/c
Iron Yoke: 126 Tons
Built By: Michigan State Univ. / FRIB
Built By: Sigmaphi, France ✔
Q T/m cos(2Θ) Quad
60 cm. warm bore
1.64 m EFL
10 % Test margin
7.6 MJ stored Energy
Iron Yoke: 72 Tons
Q3 identical to Q2 but runs at 7.9 T/m
Iron Yoke: 18 Tons
Both use same conductor as dipole (Cu + SSC outer)
Q1 Quadrupole
JLab Cold Iron Design
Clone of HMS Q1
11 GeV/c performance
7.9 T/m Gradient
40 cm warm bore
1.86 m EFL
14.75 (T/m)m Int. Grad.
398 kJ Stored Energy
25 % design margin
SC is SSC outer
Built By: Sigmaphi, France
Built By: Scientific Magnetics, Inc., U.K.

10. Ar/Ne Noble-Gas Cerenkov
SHMS Detectors
Noble Gas Cerenkov
Drift Chambers
Trigger Hodoscopes
3 Planes Scintillator
1 Plane Quartz
Heavy Gas Cerenkov*
Calorimeter
Detector Frames
Aerogel
(Funding Color Codes)
12 GeV Project Funded
NSF MRI Funding
Gift from NIKHEF and ANSL
C4F8O Heavy Gas Cerenkov
Drift Chambers
Ar/Ne Noble-Gas Cerenkov
*HGC is largely funded by NSERC grant to U. Regina
Shower Counter
PreShower Counter
OK to note that Aerogel project proposal just received NSF funding.
S2 Hodoscope
Aerogel Cerenkov
S1 Hodoscope

11. Original Detectors Schedule Phases

12. Key Reviews for Hall-C 12GeV
Jan. 2008: Review of SHMS Detectors
Apr. 2008: Design and Safety Review of the Superconducting Magnets
Dec. 2008: Design & Safety Review of the SHMS Support Structure & Shield House
Feb. 2009: Hall-C Installation Review
Feb. 2009: Design & Safety Review of HB Superconducting Magnet
Aug. 2009: Final Design Review of SHMS Detectors
Nov. 2013: Finite-Element Analysis Review of Dipole Magnet
Jan. 2015: Physics Division ERR for Q1 Magnet
Mar. 2015: Physics Division ERR for HB Magnet
Followup Reviews: Aug. 2015, Nov. 2015
Oct. 2016: Physics Division ERR for Dipole, Q2, Q3 Magnets
Magnets use common design; Full review to be held upon arrival of first item.
Inspections to be performed after installations -- Before LHe cooldown.
JSA Director’s Project Reviews
Dec. 2008, Mar. 2014, Nov. 2014, Sep. 2015
Director’s Review of HB Magnet Aug. 2014
DOE Project Reviews -- with Expert Detector & Magnet Subcommittees
Jun. 2007, Jul. 2008, Sep. 2009, Apr. 2010, Oct. 2011, June 2012, Nov. 2012, May 2013, Apr. 2014, Nov. 2014, Mar Oct. 2015,

13. Hall-C 12GeV Infrastructure & Magnets
Heavy-Gas Cerenkov (HGC) being rigged into place in the Shield House
Cryogen U-Tubes Waiting for Magnets
HB and Q1 Magnets, and Yokes for D, Q2, Q3 in place on the Carriage

14. Hall-C 12GeV Infrastructure
Moller Quads
Q2 Yoke Steel
Compton Stands
Gas
Supply
Panel
DAQ in
Shield
House
Rear SHMS Shield Wall
Gas sniffer
& PSS
Patch
Cables

15. SHMS Detectors Detectors Drift Chambers Completed.
Cosmic testing in Bldg. 23
Detectors
All Detector Construction is Complete.
All Detectors are On Site.
Rear Detectors have been installed.
Rear Detectors Installed
Noble-Gas Cerenkov waiting in Bldg. 23
Optics
Check

16. Hall-C Upgrade: Status
Finished:
SHMS Carriage & Shield House
Shielding wall from Beam Dump
Scattering Chamber
High Voltage Cables Patch System
Detector / Trigger Patch Cable System
Downstream Beam Pipe & Stands
ARC Magnet Mapping & Analysis
Moeller Collimator Mods
Calorimeter Built, Installed, Tested
Preshower Built, Installed, Tested
Hodoscopes Built, Tested, Installed; Checking PMT’s Bases
Drift Chambers Built, On Frames; Held back for Dipole
NGC: Built; Staged to Install after Dipole
HGC: Built, Tested, Installed
Detector Frames / Stands: In Use
Detector Gas Supplies: Ready
Flammable Gas Sensors; Smoke Detectors
DAQ, Cables, Power: In Place
Counting House Computers
Magnet Power, Controls, Cryogenics
Magnets: HB & Q1 Installed, Tested, Accepted
Not Finished:
Receive, Install, and Test Final 3 Magnets CRITICAL PATH
Connect spectrometer vacuum between magnets (parts on hand)
Install beam pipe (parts on hand - waiting for magnets)
Install Drift Chambers and Noble-Gas Cerenkov (ready)
Connect Current Leads for 2nd Moeller Quad (parts on hand)
Install dry-pipe Fire Sprinklers (in progress)
B-Field Shunt for SHMS at small angle (vendor)
Leaking bellows joint
Inside dipole vacuum
Enclosure.

17. The Project’s Definition of “Success”
HALL C Key Performance Parameter (Draft)
Detector operational: events recorded with a > 2nA electron beam at > 6 GeV beam energy (3 pass).
KPP Demonstration:
Detector running for 8 hours recording data from all subsystems.
Screenshots of beam status and/or accelerator e-log entries demonstrating electron beam current and energy.
Data showing relative timing of trigger, tracking, and particle identification detector subsystems.
Figures demonstrating charged-particle tracks from position-sensitive detectors.
Evidence of particle identification from calorimetry and Cerenkov detectors.

18. Summary
The 12GeV Upgrade Project equips Hall-C with an 11-GeV Spectrometer as a Partner to the Existing 7.4 GeV HMS.
Upgrade was methodically Planned, Reviewed, Reviewed, Reviewed, and Executed.
It is essentially complete, needing only the final three magnets.
We look forward to demonstrating its success.

19. THE END

20. SHMS Magnetic Optics Horizontal Vertical HB Q1 Q2 Q3 DIPOLE Iron Yokes
Particle
Trajectory
Envelopes
(Conceptual)
MOMENTUM:
LOW
CENTRAL
HIGH
Vertical

21. Hall C: Before / After Upgrade
HMS
SOS
Hall-C with HMS and SOS
(6-GeV Configuration)
e- beam
HMS
SHMS
Hall-C with HMS and SHMS
(12-GeV Configuration)
e- beam

22. SHMS Designed for Small Scattering Angles
target
chamber Q2 Q1 HB
HMS

23. Hall-C with SHMS and HMS
11-GeV Spectrometer
Partner of existing 6‐GeV HMS
MAGNETIC OPTICS:
Point-to Point QQQD for easy calibration and wide acceptance.
Horizontal bend magnet allows acceptance at forward angles (5.5°)
Detector Package:
Drift Chambers
Hodoscopes
Cerenkovs
Calorimeter
All derived from existing HMS/SOS detector designs
Well-Shielded Detector Enclosure
Rigid Support Structure
Rapid & Remote Rotation
Provides Pointing Accuracy & Reproducibility demonstrated in HMS
SHMS (New)
SHMS: dQQQD
HMS (Exists)
HMS: QQQD
SHMS = Super High Momentum Spectrometer
HMS = High Momentum Spectrometer

24. Charges addressed in this talk
Charge Items:
3.Have the specific equipment been demonstrated for readiness to operate the spectrometers? This includes magnets, detectors and DAQ. Is all the necessary equipment installed and operable? If not, what are the completion/commissioning schedule and procedures?
8. Are the responsibilities for carrying out each job identified, and are the manpower and other resources necessary to complete them on time in place?