1 / 10

Muon plans for the Phase 2 TP

Muon plans for the Phase 2 TP. Phase 2 muon plans (presented at ECFA), What’s new since Upgrade Week New upgrade management (presented today at MB) Organizing to write the muon section of the Phase 2 TP. Recap: the Phase 2 muon plans. Three main aspects: Aging studies, replacement

darva
Download Presentation

Muon plans for the Phase 2 TP

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. Muon plans for the Phase 2 TP • Phase 2 muon plans (presented at ECFA), • What’s new since Upgrade Week • New upgrade management (presented today at MB) • Organizing to write the muon section of the Phase 2 TP

  2. Recap: the Phase 2 muon plans Three main aspects: • Aging studies, replacement • GIF++ tests for CSC and RPC chamber aging, DT components • Freon replacement for RPC gas after LS3 • DT minicrate replacement • Forward muon trigger and redundancy • GE1/1 and GE2/1 based on improved L1 trigger, redundancy in the most intense region • RE3/1 and R4/1: timing for background rejection and PU mitigation • Forward muon tagging extension (ME0) • Large eta coverage (~2.1-4.0) for big acceptance, S/N boosts in modes with muon • Hermeticity for modes excluding muons

  3. High Rapidity Muon (HRM) layout • Proposed at ECFA workshop

  4. What’s new in the endcap region • If endcap calor not replaced, propose GE1/1 as envisioned in LS2 • Endcap calor replacement: now in detailed engineering discussions • Space will likely be available for ME0 • Is it the “ME0” we are used to? (eta>2.1 for muon tagging, ~6 layers) • Or is it “ME0/1” and “ME0/2” where the latter covers 1.6<eta<2.4 and has more lever arm to ME1/1 than GE1/1?

  5. Pros and cons of ME0/2 • Pros: • More trigger lever arm than GE1/1, could be more than 2 layers • Could match precisely to eta=2.4 boundary of ME1/1 • Can seek an “integrated” solution, more cost-effective? • Cons: • No opportunity to install in LS2 • Could suffer neutron “leakage” from higher eta or higher punch-through from jets than GE1/1

  6. GE1/1: trigger motivation • The leading motivation is to improve muon triggering in this region • Rate reduction from bending angle and increased efficiency from added redundancy

  7. ME0-ME1/1 bending for eta 2.14-2.4 close far • “Close” chambers have worse separation, still pretty good • Bending angle works well in ME0 to reduce trigger rate New simulation results (Krutelyov) Tools used: fast simulation with CSC sim hits — propagate CSC sim to GEM layer — emulate detector channel resolution — compute bending angle

  8. New upgrade management for 2014 • Presented today at MB • There is a muon phase 2 “box” in the organization chart • Responsible to upgrade management • IMO, should also be responsible to muon IB • This is not a permanent structure, it is intended for converging on the TP plans and document (to be submitted to the RRB in Fall 2014) • Longer-term muon management structure, including the Phase 2 upgrade: • Subject of discussion, SP-elect does not want to jeopardize LS1 upgrade and subsequent commissioning • Will discuss this at the muon IB in December with the SP-elect

  9. Upgrade organization chart for 2014 • From MB176 https://indico.cern.ch/getFile.py/access?contribId=14&resId=0&materialId=slides&confId=282923 today:

  10. Much needs to be done • Muon responsible(s?) in the upgrade organization need to be selected, and form a sub-organization • Should coordinate with muon PMs and IB • Participate in TC meetings – endcap replacement discussions • Engineering studies – define muon endcap “envelope” • Internal costing review(s) • Decisions on which muon items to be proposed • All will be carefully reviewed by LHCC - need excellent motivation • Drafting the TP muon section (first draft due by Mar. 31)

More Related