HES Meeting with Mike SpataHES Meeting with Mike Spata

Aug. 8, 2006 @ Tohoku UniversityAug. 8, 2006 @ Tohoku University

1. Pre/Post chicane layout1. Pre/Post chicane layout2. Radiation budget, Local dump design2. Radiation budget, Local dump design3. Diagnostic Instrumentation 3. Diagnostic Instrumentation 4. Beam transport optics (raster, multiple scat.)4. Beam transport optics (raster, multiple scat.)5. Vacuum chamber design5. Vacuum chamber design

SNN 20060808

Troubles at E01-011Troubles at E01-011

• PS installationPS installation• Communication between HKS Gr., Acc Gr, Hall C Communication between HKS Gr., Acc Gr, Hall C

engineers, surveyors and Walter’s Groupengineers, surveyors and Walter’s Group• Magnets Power Supplies (Water supply, instabilitMagnets Power Supplies (Water supply, instabilit

y of PS)y of PS)• FSD interlock (ion chamber?)FSD interlock (ion chamber?)• Viewer rad. DamageViewer rad. Damage• Vacuum problemVacuum problem• Beam tuning procedure, beam punch through Beam tuning procedure, beam punch through • Viewer limit mode affects other hallsViewer limit mode affects other halls

The New Splitter (Final)The New Splitter (Final)

208 V x 957 A x 224 turns

102 l/min (0.5MPa)

GAP 190mm

Pre Chicane No DZ, EZ

Drawing of the HES + HKSDrawing of the HES + HKS

HKSHES

New SPL

This part design is necessaryto finalize the HES position

How much distance?

Any diag. tools?

Beam heightBeam height

Bremsstrahlung background rates

Tilt Angle Optimization & Beam Tilt Angle Optimization & Beam CurrentCurrent• Due to higher primary beam Due to higher primary beam

momentum, we expect less e’ momentum, we expect less e’ background background

• Improve HKS KImprove HKS K++ ID trigger ID trigger

Possibility to increase beam current

100 A option is possible?

Radiation BudgetPhoton DumpTarget heat problem

PS, Water requirementPS, Water requirement

• HKSHKS– Q1 160Vx1000A (102Vx600A);50 l/min (0.6MPa)Q1 160Vx1000A (102Vx600A);50 l/min (0.6MPa)– Q2 160Vx1000A (50Vx400A);17 l/min(0.4MPa)Q2 160Vx1000A (50Vx400A);17 l/min(0.4MPa)– D 252V x 1254A (Mitsubishi); 135 l/min (0.4Ma) D 252V x 1254A (Mitsubishi); 135 l/min (0.4Ma) – D-PS 73 l/min (0.9MPa)D-PS 73 l/min (0.9MPa)

• HESHES– SPL 205x1020ASPL 205x1020A (106 l/min,0.5MPa) (106 l/min,0.5MPa)– Q1 110Vx880AQ1 110Vx880A (41 l/min,0.5MPa) (41 l/min,0.5MPa) – Q2 110Vx880AQ2 110Vx880A (42 l/min,0.5MPa) (42 l/min,0.5MPa)– HES D 233Vx1100A PS (from Japan) HES D 233Vx1100A PS (from Japan) 150 l/min+70 l/min(PS)150 l/min+70 l/min(PS)

Design input 35 C (95 F) 30 K (18F)

ScheduleSchedule• 2006 Aug2006 Aug

– Irons are dispatched to the companyIrons are dispatched to the company– Final design of the coilsFinal design of the coils– Cut iron will be delivered by the end of 2006Cut iron will be delivered by the end of 2006

• 2006 Aug 24-28 2006 Aug 24-28 – OsamuOsamu ，， Nue will visit JLabNue will visit JLab

• Early 2007Early 2007– Assembly and field mapping Assembly and field mapping

• Summer~Autumn 2007Summer~Autumn 2007– Shipping SPL+HES(QQD) to JLabShipping SPL+HES(QQD) to JLab