Injector/Re-injection Chicane

Michael Bevins

May 17, 2007

12GeV Upgrade - Beam Transport

Injection, Linac, Extraction, & Correctors

Preliminary Design and Safety Review

Outline

• Introduction & Scope• Requirements & Specifications• New/Modified Elements/Girder Count• Beam Transport Layouts• Safety Considerations• Cost Estimates• Risk Assessment• Summary

• 12GeV field strength requirements force us to replace the dipoles on the re-injection chicane girder with higher strength magnets

• Songsheet level machine layouts will be presented along with cost estimates

Introduction & Scope• To accommodate the new arc 10 line the injector line will need to be shifted over

the transfer lines beginning 20.51m upbeam of the current position

– Two existing quad girders will move over the transfer lines

– Three girders already over the transfer lines will be shifted to suit the new optics design

• Existing quad girders and diagnostics will be reused

• Two new quad girders will be installed

• The 45MeV spectrometer will need to be upgraded and relocated upbeam

– Upgrades & final location TBD

Injector & Reinjection

Requirements & Specifications

• Alignment specs

– Quads positioned to +/-0.5mm in x & y, +/- 1.0mm in z

• Vacuum specs

– Beam line partial pressure of hydrogen <10-6 torr

– Total average pressure of all other constituents less than 5x10-7 torr

• Fabrication, welding, cleaning & handling, and leak checking specs still apply

– 22631-S-001 Fabrication of Ultra-High Vacuum Equipment

– 22632-S-001 Cleaning and Handling of U.H.V. Components

– 22633-S-001 Welding Specification For U.H.V. Components

– 22634-S-001 Helium Leak Test For U.H.V. Components

– Note an update and modernization of our vacuum specs is underway

New/Modified Elements/Girder Count

• Preliminary - pending CASA review and more detailed vacuum study

• Elements in red are part of I&C WBS

Element Qty Element QtyQuads 11 Diagnostics

QD 11 BPM 11Correctors 25 ISC (scraper) 2

AT 18 ISR 1IM 2 Harp 5HC 1 Viewer 3DB Horizontal 2 Vacuum

DJ Vertical 2 Ion Pump 6Dipoles 7 Convectron Gauge 1

CB 3BL 4

QtySingle Quad Girders 11

Beam Transport Layouts – Injector & Re-injection

Injector and re-injection area

Beam Transport Layouts – Injector Line

Spectrometer shifted upbeam

Arc 10 four meter dipoles

Four Quad Girders (2 new, 2 rebuilt on short girders) BL dipole shifted

20.51m upbeam

Arc 10 quad girder

12GeV Configuration

Current Configuration

Existing injector line running under arc 8

Shift quad girders upbeam with dipoles

VERY congested area– Documentation of existing

stand positions & configuration is incomplete

– Plan to work closely with alignment group to gather as-built machine configuration

Beam Transport Layouts – Injector Line

BL dipole to replace DK (moved 20.51m upbeam)

Shift existing girders

Current Configuration

12GeV Configuration

BL dipole Quad girders

Existing injector line girders relocated over transfer line

No change to this BL dipole or girder

Beam Transport Layouts – Injector Line

Modified re-injection chicane girder

Current Configuration

12GeV Configuration

No changes between dipoles

Beam Transport Layouts – Re-injection Chicane

• Re-injection chicane girder modifications– Replace dipoles with

higher strength magnets

– Use existing support stand

– Modify plate to accommodate new magnets

Beam Transport Layouts – Selected Images

View looking downbeam

Spectrometer lineArc 8 dipole

Injector line quad girder

Beam Transport Layouts – Selected Images

Injector line girders over transfer lines

Safety Considerations

• Personnel Training

– Jlab & sub-contractor

• Radiation

– Designated areas for containment and radiation survey of material that will be removed from the tunnel

• Material handling

– Provide provisions for lifting

• Electrical Hazards

– Package and support electronics, power leads and terminal blocks to control electrical hazards

Cost Estimates –Injector/Re-Injection WBS Rollup

WBS Elements I have covered today

12GeV Beam Transport Scope, Labor & Procurement Estimate

D/PM & J Material

1.3.4.4INJECTOR & RE-INJECTION 23.5 16.1 25.2 64.8 14.1 94.0 32.0 2.0 0.0 0.0

1.3.4.4.1 DIPOLES 7.0 3.7 0.5 11.2 2.8 32.1 11.2 2.0 0.0 0.0

1.3.4.4.2QUADS &CORRECTORS

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1.3.4.4.4GIRDERS & STANDS

8.2 8.9 1.4 18.5 4.5 50.4 17.5 0.0 0.0 0.0

1.3.4.4.6 VACUUM 1.5 1.5 3.3 6.3 1.2 9.4 2.6 0.0 0.0 0.0

1.3.4.4.7INSTALLATION &ALIGNMENT

6.9 2.0 20.0 28.9 5.6 2.0 0.7 0.0 0.0 0.0

TotalContingency

Total Contingency

LABOR [Man Wks] PROCUREMENTS [$k] EXPENSES [$k]

WBS ELEMENT ME MD MT Total Contingency

Cost Estimates - Highlighted WBS

Girders & Stands - Procurements

WBSELEMENT /Activity ID

ACTIVITY DEFINITION / SCOPE ITEMS Basis D/PM JD/PM & JTotal [$k]

1.3.4.4.4GIRDERS &

STANDS50.4 17.5

2 Proc/Vend Fab New ReInjection Stands (INJ/RE-INJ Stands) 5.4 1.9

m Procure pedestal style stands for QDs upstream of first BL 900 4 3.6 eng jud 0.35 1.3

m Procure stands to support new girders over the transfer lines 900 2 1.8 eng jud 0.35 0.63 Proc Alignment Cartridges (INJ/RE-INJ Stands) 0.9 0.1

m Procure new short alignment cartridges for (2) new QD girders 150 6 0.9 eng jud 0.15 0.1

4Procurem/Vend Fab Modifications for Spectrometer (INJ/RE-INJ Stands)

30.0 10.5

45 MeV spectrometer move and upgrade 30000.0 1 30.0 eng jud 0.35 10.5

5 Proc/Vend Fab New Girder for Chicane (INJ/RE-INJ Girders) 14.1 5.0

m Procure (4) new girders (upstream of first BL) 3349 4 13.4 eng jud 0.35 4.7

m Modify re-injection chicane girder for new corrector style dipoles 750 1 0.8 eng jud 0.35 0.3

ContingencyQTY

Total [$k]

PROCUREMENTS

Unit Cost [$]

Risk Assessment

• Technical - Low

– Girders & Supports – very similar designs exist and are already proven

– Alignment - same as existing machine

• Procurement Schedule - Low

– No long-lead items identified

• Cost – Low– Good cost estimates for machined parts

• Vendor & Jlab shop budgetary estimates

Summary

• Preliminary injector and re-injection beam transport layouts and cost and installation estimates are complete based on present scope

• We are in a good position to support our DOE External Project Reviews this summer

• We will continue to work closely with our friends throughout the lab (safety, CASA, installation, vacuum, alignment, RadCon, I&C, magnet measurement, operations, procurement & facilities) as we move forward

• Detailed design will be completed to support assembly and installation schedules

• We look forward to comments & recommendations from the committee