1 / 25

E. Métral

ENGINEERING DESIGN REVIEW (EDR) FOR THE TOTEM ROMAN POTS ( Thursday 24 Nov. 2005 ). E. Métral. Charge to the Review Committee (from E. Tsesmelis, TS/LEA) Check that the TOTEM Roman Pots perform according to the intended specifications

dorcas
Download Presentation

E. Métral

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. ENGINEERING DESIGN REVIEW (EDR) FOR THE TOTEM ROMAN POTS (Thursday 24 Nov. 2005) E. Métral • Charge to the Review Committee (from E. Tsesmelis, TS/LEA) • Check that the TOTEM Roman Pots perform according to the intended specifications • Endorse the general scenario for the engineering design, assembly and mounting of the TOTEM Roman Pots • Approve the TOTEM Roman Pot concept to allow detailed engineering drawings and technical specifications to proceed • Check the project organization, safety issues and compatibility with neighboring (machine) systems

  2. AGENDA

  3. The TOTEM Experiment at LHC Forward Physics at Interaction Point 5 • Elastic p-p scattering • Total p-p cross section • Diffractive physics • Absolute luminosity measurement • Needs detection of leading protons with very small scattering angles (few μrad)

  4. ROMAN POT DESIGN (1/13)

  5. ROMAN POT DESIGN (2/13) • The Roman Pot, an historically proven technique for near beam physics: ISR, SPS, TEVATRON, RICH, DESY • A CERN in-house technology: ISR, SPS-UA4, CDF CERN for CDF CERN for SPS (UA4)

  6. ROMAN POT DESIGN (3/13) Constraints/Requirements for TOTEM • Very close to the beam operation (10σ ~ 0.8mm) • Secondary vacuum separation for detectors and cables (no outgassing) • High mechanical reliability of the thin window on the pot • Shielding of RF pick-up on the detector/electronics • High resolution, precision and repeatability of the movements

  7. ROMAN POT DESIGN (4/13) • Roman Pots are in many aspects identical to the LHC collimators • Movable devices in the LHC beam • Almost the same requirements for vacuum and RF • Close to the beam operation ~ 10σ • Same Engineering Team (TS-MME group at CERN) • Same movements (motors, resolvers, positioning detectors, drivers) • Same controls hardware/software through the LHC Control room

  8. ROMAN POT DESIGN (5/13)

  9. ROMAN POT DESIGN (6/13)

  10. ROMAN POT DESIGN (7/13)

  11. ROMAN POT DESIGN (8/13)

  12. ROMAN POT DESIGN (9/13)

  13. ROMAN POT DESIGN (10/13)

  14. ROMAN POT DESIGN (11/13)

  15. ROMAN POT DESIGN (12/13)

  16. ROMAN POT DESIGN (13/13)

  17. RF ISSUES (1/2)

  18. RF ISSUES (2/2) Ferrite

  19. VACUUM ISSUES • Synchrotron radiation is the main gas source (referring to a paper by FZ: There is indeed SR in the outgoing line of the beam as well, due to reflection along the beam pipe)  Bakeout (150o C) mandatory  NEG coating on the RP chamber (requires activation at 200o C)

  20. PLANNING AND INSTALLATION (1/3)

  21. PLANNING AND INSTALLATION (2/3)

  22. The installation procedure PLANNING AND INSTALLATION (3/3)

  23. ATLAS ROMAN POTS AT IR1 (1/3)

  24. ATLAS ROMAN POTS AT IR1 (2/3)

  25. ATLAS ROMAN POTS AT IR1 (3/3)

More Related