1. Project X RD&D Plan Beam Transfer Line and Recycler Injection David Johnson AAC Meeting February 3, 2009

2. Page 2 AAC, 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.

3. Page 3 AAC, 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.)

4. Page 4 AAC, 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 –1.6x10 14 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 <100 o K  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)

5. Page 5 AAC, 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 & H 0 ) –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 (1 st & 2 nd harmonic RF voltage)

6. Page 6 AAC, 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.

7. Page 7 AAC, 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

8. Page 8 AAC, 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)

9. Page 9 AAC, 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

10. Page 10 AAC, 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).

11. Page 11 AAC, 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) http://indico.fnal.gov/conferenceDisplay.py?confId=2162

12. Page 12 AAC, 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