Tevatron Helix and Separators Scope Review

Meeting: Tuesday, August 26, 2003
8:30 - 16:30 (Presentations: 9:00 - 15:00)
Venue: Huddle

Main reason for review:

[ Scope Review (WBS 1.3.4.4.5.3)Decision on creating additional space in the lattice and to build longer separators at the interaction regions.]

Charge:

1. Review the present status of the beam helix scheme and possible/proposed near-term improvements and studies
   1. Present status
      1. Separator layout and operation
      2. Helix description at all stages of injection to store, and possible modifications with existing hardware
      3. Description of aperture used in sigma and mm, also transverse vs dispersion
      4. Dynamic aperture investigations, and comparison with aperture used
      5. Beam correction and differential correction schemes
   2. Near-term improvements and studies
      1. new helix up the ramp, no polarity reversal for roman pots, collimators
      2. higher gradient operation (for short times), 18x18 study, crossing angle at interaction points, smaller beta* ~25cm
      3. studies to include summary of studies so far, study plans and time needed in future
2. Review potential long-term improvements - Where new separators could go, what would need to be done, what modifications to existing hardware. What are the perceived benefits, relative effort and risk. Is the schedule reasonable?
3. Review and comment on possible gains from improvements.
4. Comment on the technical plan for increasing the separators gradient. should this be part of the RunII Program or a separate R&D project?
5. Suggest other possible approaches. Is there a consistent intergrated approach?

Upcoming Project Decisions

9/1/03 - Pursue additional and/or longer separators? Understand impact on other hardware, etc., that would need to be removed, relocated or modified.

4/28/04 - Pursue higher voltage operation and/or continue R&D

Agenda

08:30 - Executive Session

09:00 - 15:00 Presentations