1 / 15

Beam pipe, FCAL, and BCAL

Beam pipe, FCAL, and BCAL. July 27 th , 2005 Y.Sugimoto. Design criteria. Z BCAL = 4.3m Z FCAL(Mask) = Z TPC = 2.3m EM shower debris should not hit TPC Tracks passing through FCAL should not go back to TPC

leena
Download Presentation

Beam pipe, FCAL, and BCAL

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. Beam pipe, FCAL, and BCAL July 27th, 2005 Y.Sugimoto

  2. Design criteria • ZBCAL= 4.3m • ZFCAL(Mask) = ZTPC = 2.3m • EM shower debris should not hit TPC • Tracks passing through FCAL should not go back to TPC • In some options, back-scattered photon can go into TPC. If it turns out not acceptable by simulation studies, make ZFCAL(Mask) smaller. • Radii of beam pipe should be large enough not to be hit by pair background core

  3. Pair background Track density (cm/cm3/BX) Ebeam=250 GeV, B=3T

  4. BCAL hit Energy weighted hit distribution (GeV/mm2) • Nominal 2mrad • Ebeam=250 GeV • 1 BX • 3T

  5. BCAL hit Energy weighted hit distribution (GeV/mm2) • Low Q 2mrad • Ebeam=250 GeV • 1 BX • 3T

  6. BCAL hit Energy weighted hit distribution (GeV/mm2) • High L 20 mrad • Ebeam=250 GeV • 1 BX • 3T

  7. Back scattering to TPC

  8. Baseline design

  9. Baseline design • Z co-ordinate (fixed except for A) • A: 5cm • B: 25cm • C: 35cm • D: 110cm • E: 230cm • F: 260cm • G: 285cm • H: 320cm • I : 400cm • K: 405cm • L: 430cm • M: 450cm • R co-ordinate • Option dependent (See EXCEL file)

  10. Pre-Baseline design

  11. Pre-Baseline design • Z co-ordinate (fixed except for A) • A: 5cm • B: 25cm • C: 35cm • D: 110cm • E: 230cm • F: 260cm • G: 285cm • H: 320cm • I : 400cm • K: 405cm • L: 430cm • M: 450cm • R co-ordinate • Option dependent (See EXCEL file)

  12. Parameters (Baseline Design)

  13. Impact on detector design Baseline Design

  14. Impact on detector design Pre-Baseline Design

  15. Next step • Study 1 TeV case • Pair background to VTX, IT, FST • Need more statistics (x1000) • Back scattering to VTX, TPC • Full simulation • More statistics (x100) • BCAL performance study • Full simulation • More statistics (x100?)

More Related