1 / 20

Resistive Plate Chamber Upgrade for the PHENIX Muon Arm Trigger

Resistive Plate Chamber Upgrade for the PHENIX Muon Arm Trigger. Rusty Towell of Abilene Christian University for the collaboration APS DNP 2010. BRAHMS. RHIC pC Polarimeters. Absolute Polarimeter (H jet). PHOBOS. BRAHMS & PP2PP (p). PHENIX. PHOBOS. RHIC, lenght: 3.83 km. STAR.

caspar
Download Presentation

Resistive Plate Chamber Upgrade for the PHENIX Muon Arm Trigger

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. Resistive Plate Chamber Upgrade for the PHENIX Muon Arm Trigger Rusty Towell of Abilene Christian University for the collaboration APS DNP 2010

  2. BRAHMS RHIC pC Polarimeters Absolute Polarimeter (H jet) PHOBOS BRAHMS & PP2PP (p) PHENIX PHOBOS RHIC, lenght: 3.83 km STAR Siberian Snakes Siberian Snakes PHENIX (p) STAR (p) Spin Rotators Spin flipper Partial Siberian Snake Spin Rotators Strong AGS Snake Pol. H- Source LINAC BOOSTER Helical Partial Siberian Snake AGS 200 MeV Polarimeter AGS Internal Polarimeter Rf Dipole AGS pC Polarimeters Relativistic Heavy Ion Collider (RHIC) also collides polarized protons

  3. The PHENIX Detector

  4. Motivation: The Origin of the Proton Spin orbital angular momentum quark spin gluon spin Experiment • √s = 500 GeV polarized pp collisions • Probe the quark and anti-quark spin contributions via high momentum muons from the W bosons • Need to at least increase rejection factor of muon arms trigger by a factor of ~100. • We need a trigger that is sensitive to the muon momentum. • Need to introduce timing information in the muon trigger to reject beam backgrounds.

  5. Resistive Plate ChamberDesign Our requirements are very similar to those of the CMS end caps RPCs. Therefore we have taken advantage of their extensive R&D efforts. PHENIX RPC detector requirement signal plane

  6. Scope of the PHENIX RPC Trigger Upgrade and Schedule RPC1(a,b) RPC3 RPC3 Future 2010 2009

  7. frame and parts gas cell route Korea Italy BNL China bakelite route Flow Chart of RPC production for PHENIX Bakelite: Produced, QA, Cut and Cleaned in Italy. Completed 5/09 Gas Gap: Produced for RPC 1 and 3 by Korea University. Completed 10/9/09 Frames and Signal Planes: Produced in China (CIAE). Final assembly is being done at BNL.

  8. BRAHMS PHOBOS RHIC, lenght: 3.83 km PHENIX STAR PHENIX RPC Assembly AreaBldg 912 N

  9. Gap Dark Current Test Stand Factory Layout Gap Pressure Tests Table Cosmic Ray Test Stand Large Zipper Door (used for all large items) Assembly Areas

  10. Efficiency and Cluster Size 10/12/2009 11 Jeongsoo Kang

  11. Noise RateNumber of strips vs. noise rate (for all 48 modules in RPC3N) Design Goal Mean value of noise rate is 0.5 Hz/cm2.Only 7 strips are over 10 Hz/cm2Threshold is 160mV.

  12. Half Octant Production

  13. Narrow Gaps in Station 3 Some gaps are as small as 13 cm in places.

  14. First Half-Octant at PHENIX

  15. Moving into the RHIC tunnel

  16. Rolling past the RHIC magnets

  17. The First RPC is Installed

  18. RPC3 North Installed

  19. Summary & Outlook • The RPC trigger upgrade for the muon arms of PHENIX is on schedule. • Extensive quality control of modules has been completed. • RPC3N was installed in 2009. • RPC3S was installed in 2010. • First physics run scheduled to start late this year.

More Related