g2p/gep beamline tim michalski project lead. overview facilitate the design, procurement, and build...
TRANSCRIPT
g2p/GEp Beamline
Tim Michalski
Project Lead
Overview
• Facilitate the design, procurement, and build of the beamline – up to the target chamber
• g2p/GEp Beamline Overview• Experimental Plan• Project Overview• Project Status• Project Challenges with Risk Mitigation• Project Schedule and Milestones
Beamline Overview
A second configuration will have the target at the pivot and a longer articulating arm.
Experimental PlanRun #
Bam Energy
Beam Current
Target Angle Target Location Septa Magnet Dump
Target Material Target field Comments
1 2.257 1 uA 20 87 cm upstream N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height.
2 2.257 50-130 nA 90 87 cm upstream g2p Yes - 6 deg Local Dump NH3 5.1 T
3 2.257 150 nA max 90 87 cm upstream g2p Yes - 6 deg Local DumpCarbon(?) 5.1 T Thru Target(?) - Optics
4 2.257 50-130 nA 20 87 cm upstream GEp Yes - 6 deg Local Dump NH3 5.1 T
5 1.159 1 uA 20 87 cm upstream N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height.
6 1.159 50-130 nA 20 87 cm upstream GEp Yes - 6 deg Local Dump NH3 2.5 T
7 1.159 50-130 nA 90 87 cm upstream g2p Yes - 6 deg Local Dump NH3 2.5 T
8 1.159 150 nA max 90 87 cm upstream g2p Yes - 6 deg Local Dump Carbon(?) 2.5 T Thru Target(?) - Optics
9 1.706 1 uA 20 87 cm upstream N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height.
10 1.706 50-130 nA 90 87 cm upstream g2p Yes - 6 deg Local Dump NH3 2.5 T
11 1.706 150 nA max 90 87 cm upstream g2p Yes - 6 deg Local Dump Carbon(?) 2.5 T Thru Target(?) - Optics
12 1.706 50-130 nA 20 87 cm upstream GEp Yes - 6 deg Local Dump NH3 2.5 T
27 2.257 50-130 nA 20 87 cm upstream G2p Yes- 6 deg Local Dump NH3 5.1T Target nominal height
28 2.257 50-130 nA 90 87 cm upstream g2p Yes - 6 deg Local Dump NH3 5.1 T Target nominal height
13 3.355 1 uA N/A 87 cm upstream N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height
17 3.355 50-130 nA 0 87 cm upstream g2p Yes - 6 deg Hall A Dump NH3 5.1 T Longitudinal target polarization run
15 3.355 50-130 nA 90 87 cm upstream g2p Yes - 6 deg Local Dump NH3 5.1 T
16 3.355 150 nA max 90 87 cm upstream g2p Yes - 6 deg Local Dump Carbon(?) 5.1 T Thru Target(?) - Optics
18 2.257 1 uA N/A At pivot N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height.
19 2.257 50-130 nA 90 At pivot g2p No - 12.5 deg Local Dump NH3 5.1 T
20 2.257 150 nA max 90 At pivot g2p No - 12.5 deg Local Dump Carbon(?) 5.1 T Thru Target(?) - Optics
21 2.257 50-130 nA 90 At pivot GEp No - 12.5 deg Local Dump NH3 5.1 T
26 1.159*** 50-130 nA 90 At pivot No – 12.5 deg Local Dump N/A 2.5 T Optics Transform
22 3.355 1 uA N/A At pivot N/A N/A Hall A Dump N/A 0.0 Straight Thru Beam at nominal height.
23 3.355 50-130 nA 90 At pivot g2p No - 12.5 deg Local Dump NH3 5.1 T
24 3.355 150 nA max 90 At pivot g2p No - 12.5 deg Local Dump Carbon(?) 5.1 T Thru Target(?) - Optics
25 3.355 50-130 nA 90 At pivot GEp No - 12.5 deg Local Dump NH3 5.1 T
*** - FZ1 and FZ2 in position for 2.2 GeV run, but with half field strength on FZs and Target magnets
Targ
et E
leva
ted
by 9
cm
Rev 3
Run Trajectories
FZ1
FZ2
Target
FZ1
FZ2
Target
Region 1
Slow Raster/Calorimeter Stand
Regions 2 and 3
Upside Down Girder – Region 2
FZ1 Magnet Stand – Region 3
Viewer – Region 3
Beam Diagnostics Girder “Articulating Arm” – Region 3
Project Overview
• Design, procurement, component calibration and testing– Now through May, 2011– Some components arrive after May
• Access to Hall A for installation – May 16, 2011
• Installation completion – start of Physics– November 19, 2011
Project Status
• Regions 1 and 2 designs complete and material ordered
• Region 3 design complete – procurement under way
• Calorimeter controller repaired and SW upgrades complete
• I&C electronics designed and being built• New Transport electronics being built for existing
BPMs in Hall A• Safety systems for experiment reviewed• Resource planning integrated into 6MSD
schedule
Project Challenges
• BPMs and BCMs for Low Current data– Mitigation
• BPM – short M15 style, new electronics, tested in North LINAC
• BCM – new receiver, tested in Hall A
• FZ Magnet PS requirements evolving– Need up to 4 kG, requiring 231A for FZ1– Need up to 8 kG, requiring 465A for FZ2– Mitigation – assessed capabilities of magnet
power supplies in Hall C – meet requirements – assembling spares
Project Challenges
• Acquisition of equipment from various sources– FZ magnets, corrector magnets, slow raster,
new BPMs, power supplies, controllers– Mitigation – get control as soon as possible,
test and calibrate early (before installation)• Resurrection of Tungsten Calorimeter
– Reposition in beamline, re-establish functionality, recalibrate
– Mitigation – Controller extracted from Hall A, repaired, SW complete
Project Challenges
• Slow Raster control issues in previous experiment– Mitigation – New function generator – Testing
in Progress by Physics Fast Electronics Group
• Installation at the same time as 12 GeV upgrades during 6 month down– Mitigation – tied to detailed 6MSD planning –
all resources identified in schedules – have ~3 weeks float
Project Challenges
• Not all material for installation on site yet– Mitigation – FZ2 Stand procurement being managed –
potential impact to 6MSD installation reviewed– Viewer and Articulating Arm Girder /
Positioning – manage through Machine Shop and local vendors
Safety – PSS / FSD• Uses standard BLA system components• Monitoring FZ magnet PS current – limits set to ensure
beam is controlled successfully through the chicane• FSD masking for Calorimeter Operation• Viewer in chicane – allows MCC Operators to view beam
for steering confirmation• Thermocouples on LC dump• Viewer on LC dump – allows MCC Operators to view
beam for steering confirmation• Update PSS sweep procedure as required after walk-
through, equipment installation• “Lock Out” FZ2 stand control – remove controller
Beamline Installation Schedule
Beamline Installation Milestones