1 / 17

Possible EMMA upgrades

Possible EMMA upgrades. Only few slides on behalf of everyone Individuals will present where possible (if not, please make sure I have relevant information) Three kinds of upgrades Immediate & short term (1-2 years) (ST) Long term (2-5 years) (LT) Very long term (5+ years) (VLT)

midori
Télécharger la présentation

Possible EMMA upgrades

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Possible EMMA upgrades • Only few slides on behalf of everyone • Individuals will present where possible (if not, please make sure I have relevant information) • Three kinds of upgrades • Immediate & short term (1-2 years) (ST) • Long term (2-5 years) (LT) • Very long term (5+ years) (VLT) • Change footprint of EMMA or not ? → 6 upgrade types … Move EMMA ? Bruno Muratori on behalf of all EMMA upgrade authors

  2. More EMMA running time (ST) • Everyone • Made good progress, but much to accomplish • Basics: tune/ToF vs. Energy, injection for all energies • Address machine errors • Serpentine acceleration, explore parameters • More advanced experiments • Benefits are clear • Cost is the cost of running ALICE as an injector • Have at least two years worth of experiments • No additional requirements

  3. Inj. line additional diagnostics (ST) • N. Bliss, C. Hill, C. Johnstone • Emma - Module 30 - moving WCM and addition EBPM for injection line • Benefits: Better injection into EMMA & can tell incoming angle precisely • Cost & effort: £8500 + VAT & 0.12 sy • Timescale: 3 months to build • No additional requirements

  4. Extraction / diagnostic line (ST) • B. Muratori, S. Jamison • Addition of extra components to line: • Transverse deflecting cavity (~ £ 200k) • Collimators (~ £ 20k) • Benefits: Better diagnostic abilities, collimators important when beam off closed orbit • Cost & effort: (~ £ 20k + £ 200k) & 0.2 + 1.5 sy • Timescales: (5 + 12 months) • No additional requirements

  5. Remote control room (ST) • C. Johnstone, S. Smith • Remote desktop connections so EMMA can be controlled from elsewhere • Benefits: Great collaboration enterprise & makes EMMA better known & promotes expertise exchange • Cost & effort: ? • No additional requirements

  6. BPM VME cards (ST) • A. Kalinin • Have all the originally designed BPMs • Benefits: Fully instrumented machine • More information to diagnose error sources • Better understand actual lattice compared to model • Cost & effort: • 40 BPMs × £ 1.25k • Procurement: £ 50k + VAT • 0.7 sy • No additional requirements

  7. Inj. matching improvement (ST) • I. Kirkman, S. Machida • Add another BPM just before the septum. • Redesign the last part of injection line for better optical matching. • Benefits: Better injection matching (orbit and optics) into EMMA. • Cost & effort: ? • Timescale: ? • No additional requirements

  8. Kicker upgrade (matching Zobel network) (ST) • K. Marinov • Keep existing kicker magnets, new PSUs needed only • Performance similar to that of delay-line systems • Flat-top pulses (eliminates jitter problems) • Impedance matched system (magnet and PSU can be metres away from each other) • Current rise & fall times: 133 ns demonstrated with 1.4 uH magnet inductance (PAC09); 50-60 ns could be possible with 0.475 uH (existing EMMA kickers) • Feasibility study needed • Cost & effort:much cheaper and easier to build than a delay-line kicker system; low risk • No additional requirements

  9. Increase EMMA acceleration (ST/LT) • P. McIntosh, S. Berg • To increase the acceleration capability (a=1/6 to1/4) • Needs extra CPI IOT & LLRF & waveguide • Benefits: • Acceleration with non-ideal lattice • Had been originally requested & more investigations could be done with higher voltage • Cost & effort: IOT £360k, LLRF £150k, Waveguide £20k, Integration and controls £50k, Procurement= £580k & 2 sy • No additional requirements

  10. Inductive acceleration (LT/VLT) • T. Greenshaw, R. Appleby, J. Clarke, J. Garland, N. Marks, H. Owen, B. Seviour • Construct & test inductive cavity first • Use this on EMMA (not costed) • Benefits: • No need for synchronisation with bunch • Continuous injection possible (ADSRs) • Cost & effort: £ 50k & 0.5 sy • No additional requirement (for 1st part, 2nd ?)

  11. Dispersion free-region (ST) • B. Muratori • To create a small dispersion-free straight • Investigating use of multipoles to do this • Remove some cavities / other for space • Benefits: • Show feasibility of dispersion-free (or minimum dispersion) straight • Half-way measure before proper insertion • Cost & effort: Depends on extra cpts needed • No additional requirement

  12. Insertion in EMMA (LT/VLT) • S. Machida • Create racetrack from EMMA with insertion straight. This is coupled with nonlinear magnets. • Benefits: • makes injection / extraction easier • Continuous injection (ADSR) • Cost & effort: £ 1M + EMMA move & ? • Extra requirement: move EMMA from present location

  13. Vertical Excursion FFAG(LT/VLT) • S. Brooks • Split energy dependent orbits vertically rather than horizontally in EMMA • Replace quadrupoles with new magnets • Benefits: Reduction in magnet size for proton / carbon therapy (e.g.) • Cost & effort: Procurement £ 1.63M & 9 sy • No additional requirement

  14. Slow Acceleration (LT/VLT) • S. Berg • Requires low frequency cavities ~ 3 of them • Cavities fit in usual EMMA cavity space • Benefits: • Studies more common FFAG applications: proton driver, medical, ADSR • Study very different regime with minimal change • Cavities new & very good R & D project • Cost & effort: £ 2-3M & 2sy + build • No additional requirements

  15. Magnetic Spiral Inflector Inj. (VLT) • S. Tzenov, J. Jones • Use upside-down magnetic‘funnel’ to inject into EMMA to achieve continuous injection as in a cyclotron • Requires theoretical study • Benefits: • Continuous injection possible (ADSR) • Cost & effort: £ 0 & 1sy initially to prove concept, later ? • No additional requirements, later → move E.

  16. Addition of multipoles (ST) • Everyone • Add multipoles in EMMA ring • Benefits: • Could do chromaticity correction & correct other unwanted nonlinearities and help insertion • Explore PAMELA-type machine • This is already a requirement for some of the proposals • Cost & effort: depends on how many needed • No additional requirements

  17. Moving EMMA • Y. Saveliev, B. Muratori, others • Move EMMA to SRS outer hall • Use thermionic gun (more reliable) or part of larger accelerator complex with RF gun (of which injection into EMMA is just one application) • Use linac to required injection energy • Benefits: Some of the above proposals require such a move & many more possibilities open • Cost: Big !

More Related