GMn experiment engineering & design status
Robin Wines
October 20181
Components of GMn & Calibration
October 20182
GMn experiment requires• SBS• BB and detectors• HCal & CDet
Calibration setup requires• HRS-left• SBS• HCal & CDet
09019 Hydrogen/Deuterium Experimental Points 10cm Hydrogen/Deuterium
Q2 [GeV2]
θBB [deg]
dBB [m]
θ48D48 [deg]
d48D48 [m]
dHCAL [m]
Beam Line Configuration #
3.5 32.5 1.80 31.1 2.0 7.2 3 4.5 41.9 1.55 24.7 2.25 8.5 3 5.7 58.4 1.55 17.5 2.25 11 3 8.1 43 1.55 17.5 2.25 11 3 10.2 34 1.75 17.5 2.25 11 3 12.0 44.2 1.55 13.3 2.25 14 3
13.5 33.0 1.55 14.9 3.1 17 4
Calibration Points: 10cm Hydrogen
Q2 [GeV2]
θHRS [deg]
θ48D48 [deg]
d48D48 [m]
dHCAL [m]
Beam Line Configuration #
4.4 39 25.5 3.1 17. 4 4.4 42 25.5 3.1 17. 4 6.0 61.1 14.9 3.1 17. 4 6.0 64.3 14.9 3.1 17. 4 6.0 67.5 14.9 3.1 17. 4 6.0 70.7 14.9 3.1 17. 4
GMn Layout
October 20183
SBS and HCal
BB
Calibration Layout
October 20184
HRS-L
SBS
HCal
SBS Equipment
October 20185
Scattering Chamber-existing
Front Field Clamp-done
Corrector Magnets-done
48D48 Magnet-done
Counterweight Support Structure-done
Exit Beam Pipe-in assembly
Hcal & CDet- in assembly
Status
October 20186
ITEM STATUSHall A & UtilitiesFloor rise at the pivot needs survey & concrete leveling during install
Floor plates
GMn uses 10 of 15 SBS floor plates, Have 10 plates. GMn uses 9 of 16 HCAL floor plates, Catania has 7 plates on order.
Move BB rails to BL during installHRS-BR interferences - move air handler, move catwalk post at pivot, install access platform to access cryo can at pivot Modify & use Tritium platform, pre-install workLCW upgrade needs engineering check & purchase
BEAMLINEClear utilities supported along existing beamline during installMove and modify existing beamline supports during installModify existing beamline flanges doneNew beamline conical pipe doneBeamline shielding doneBeamline assembly hardware design tested, needs purchasingSupport tower doneSupport tower extension delivery Nov 30, 2018Vertical supports redesigned, needs purchasingCorrector magnets done
Status
October 20187
ITEM STATUSSBS MAGNET
Magnet modificationsassembled and tested, need holes for field clamp mounts
Counterweight support structureassembly tested, blocks need painting and holes for mount attachments
Magnet sub-assembly stand needs engineering and purchaseField clamps done
HCALDetector frame assembly parts and frame doneSupport redesigned, need drawings and purchasingPersonnel Access platform need drawings revised and purchasing
CDETFrame doneAssembly and mounting parts need design and engineering checks and purchasing
BigBiteFrame modifications done, in assemblyMagnet interferences check at installDetector stack base support needs design & engineering check
Status
October 20188
ITEM STATUSElectronics ShieldingMain hut doneBB GEM hut done(new GEM hut for side of SBS support) needs design
Target chamber need to purchase windows
Sieve plate and holder needs purchasing
Summary
October 20189
Completion requires 24 mw design and 18 mw engineering
Hall A has staff of 2 engineers, 1 associate engineer and 3 designers.
Present workload and priorities, allow all SBS GMn engineering & design to be complete by mid-March 2019. This does not include fabrication. The GEn polarimeter design work is not included in this schedule.
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