Project X RD&D Plan Beam Transfer Line and

Recycler Injection David JohnsonAAC Meeting

February 3, 2009

Page 2AAC, February 3, 2009 – David Johnson

Outline

• Description of the scope of the system

• Performance specification of the system

• Primary technical issues and the strategy to address them

• Goals of the plan by year

• Role of outside collaborators.

Page 3AAC, February 3, 2009 – David Johnson

System Scope

• RD&D plan from CD0 to CD2 (assuming the Director’s Review in FY12)– Transfer Line:

Includes:– Overall optics design and footprint, including all of the major

components such as magnet systems (inc. power supplies), collimation and absorber systems, energy correction systems, and the cryogenic vacuum system.

– Specification for all instrumentation needs. Excludes:

– Specific design and construction of beam instrumentation– Cryogenic distribution to tunnel, utilities, civil, etc.

– Recycler Injection Includes

– Recycler injection straight section lattice design and Recycler lattice design, injection chicane, H- stripping system(s), transverse and longitudinal painting systems, and waste beam handling.

Excludes– Hardware/software required for Recycler modifications outside the

injection region (RF, mods. for e-cloud, ring collimation, extraction systems, etc.)

Page 4AAC, February 3, 2009 – David Johnson

Transfer Line Requirements

• The goal for transport and injection is to:– Maximize transmission and injection efficiency,– Minimize and mitigate the sources of uncontrolled loss, and– Localize remaining and intentional losses in well shielded areas

• Expected beam power– 1.6x1014 H- per pulse at 5 Hz for 1 MW at 8 GeV

• Transport Line performance requirements– Transfer line transmission > 99.99% (after collimation)– Maximum average activation level < 20 mrem/hr

Maximum dipole field 0.05 T Beam tube temperature <100oK Beam tube pressure <10-8 torr

– Minimum Transverse aperture > 10 of linac 8 GeV beam ( 21 mm @MAX)

– Momentum Aperture > +/- 0.75% (comparable to ring)– Collimation system up to 5%

(Loss rate ~0.05 W/m)

Page 5AAC, February 3, 2009 – David Johnson

Recycler Inj. Requirements

• Injection Performance– Injection Rate 5 Hz

– Injection Stripping efficiency 98% impacts losses and waste beam handling (electrons & H0)

– Maximum Space charge tune shift < 0.05 Transverse emittance (N) 25-mm-mr transverse painting

Bunching Factor ~ 2 to 2.5 longitudinal painting

– Max. Longitudinal bunch emittance 0.5 eV-sec (determined by MI transition crossing) Impacts (1st & 2nd harmonic RF voltage)

BGN

N

N

320

14

2

r-Q

dist uniformfor 1~G

paint allongitudin 2B

mrad mm25

107.1

Page 6AAC, February 3, 2009 – David Johnson

Technical Issues

• The main technical issues for transport of 8 GeV H- and injection into the Recycler are:– Control and mitigation of uncontrolled losses due to single particle

loss mechanisms in the transport line

– Uncontrolled losses in the injection region due to the injected and circulating ions interaction with stripping foil.

– Stripping efficiency and lifetime of the injection foil or the stripping efficiency of laser stripping injection system.

– Collection of the stripped electrons and neutrals from the injection process and safely disposing of them in the injection absorber.

Page 7AAC, February 3, 2009 – David Johnson

Technical Strategy

• To address these issues and advance the design to CD2 we’ve created:– a Transfer Line Preliminary Design Task (with 5 sub-task components), and

– a Recycler Injection Preliminary Design Task (with 7 sub-task components).

• Each task covers the time period between CD0 and CD2 with a defined set of deliverables each year.

• The overall goals of the two RD&D tasks are– Mitigate risks associated with the four major issues on previous slide– Evaluate technology choices– Optimize overall system design– Perform component prototyping (as necessary)– Perform alternative design analysis– Perform value engineering on sub-systems as required

• Successful completion of the RD&D Program results in– Conceptual Design Report in support of CD1 decision– Preliminary Engineering Design Report in support of CD2 decision

• The RD&D program augments FNAL expertise with the expertise from outside collaborators at SNS, BNL, LBNL, and CERN

Page 8AAC, February 3, 2009 – David Johnson

Technical Strategy (2)

• 8 GeV Transfer line– Optics/footprint – Vacuum – Collimation – Energy Correction– Linac Absorber

• Recycler Injection– Recycler lattice– Injection chicane– Foil stripping– Laser stripping– Transverse painting– Longitudinal painting– Waste beam

(RD&D sub-task components)

Page 9AAC, February 3, 2009 – David Johnson

Goals and Timeline

• FY09– Evaluate and optimize lattice and footprint for transfer line and ring– Cost/schedule for prototyping required components– Develop instrumentation specifications and complete component

specifications – Evaluation of Alternative Configuration and its impact on the RD&D program

• FY10– Complete conceptual design of all components – Prototype components, as necessary (could cross over into FY11)– Documentation for Conceptual Design Document / CD1 reviews

• FY11– Complete preliminary engineering design of all system components

• FY12– Documentation for Preliminary Engineering Design Document / CD2 reviews– Initiate final engineering/manufacturing design drawings for complete system

Page 10AAC, February 3, 2009 – David Johnson

Collaborators

• The transfer line and Recycler injection tasks have established a collaborative effort with other labs which range from information exchange to consulting to leading the R&D effort for some of the currently defined RD&D tasks.– LBNL: has agreed (in principal) to take the lead effort for the design

of the energy correction system and the beam line vacuum system (including the cryogenic beam screen).

– BNL: has agreed to take the lead in the design of the chicane injection insert and the foil stripping system.

– CERN: as they are designing a 4 GeV H- transport and injection system, they face many of the same problems and we have agreed to informally share designs, ideas, and issues.

– SNS: has agreed to consulting, as needed, for the ORBIT program, and other areas as needed, and have established a Laser stripping working group (first mini-workshop at SNS in Feb 09).

Page 11AAC, February 3, 2009 – David Johnson

Summary

• We have identified (4) critical technical issues concerning the transport and injection of 8 GeV H- ions to the Recycler

• We have established a RD&D program with specific yearly deliverables to:– Address and mitigate these technical issues– Evaluate technology choices– Optimize overall system design – Perform prototyping of components, as necessary– Perform alternative design analysis– Perform value engineering on sub-systems, as necessary

• We have held our first collaboration meeting (11/08) to discuss RD&D topics and have initiated discussions with our collaborators on their efforts for FY09. (see Transfer/Injection WG summary at: http://indico.fnal.gov/conferenceDisplay.py?confId=2162)

Page 12AAC, February 3, 2009 – David Johnson

Back-up Slide 1.9.1.1

• 1.9.1.1 Transfer Line Optics/footprint (FNAL / BNL,CERN)– FY09

Single particle risk analysis – specifications for major systems (i.e. vacuum level, shielding temperature, maximum magnetic field, collimation capacity, etc.)

Cost/schedule analysis of transfer line footprint/civil construction issues Cost/schedule for permanent magnet dipole prototype Preliminary specifications for all components Evaluate beam line configuration for alternate configuration Updated beam line lattice in MAD notation reflecting technology choices

– FY10 Prototype of permanent magnet dipole, if required Documentation for Conceptual Design Document/CD1 reviews

– FY11 Preliminary Engineering Designs of beam line magnets

– FY12 Documentation for Preliminary Engineering Design Document/CD2 reviews Begin final engineering drawings for beam line magnet construction/procurement