Muon preparation for the phase 2 tp
This presentation is the property of its rightful owner.
Sponsored Links
1 / 24

Muon preparation for the Phase 2 TP PowerPoint PPT Presentation


  • 77 Views
  • Uploaded on
  • Presentation posted in: General

Muon preparation for the Phase 2 TP. For discussion: What was shown at the upgrade plenary Weds. Discuss the outline of the muon TP section Additional thoughts. Recap of muon Phase 2 plans. Three main aspects (details in backup slides): Aging studies, replacement

Download Presentation

Muon preparation 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Muon preparation for the phase 2 tp

Muon preparation for the Phase 2 TP

For discussion:

  • What was shown at the upgrade plenary Weds.

  • Discuss the outline of the muon TP section

  • Additional thoughts


Recap of muon phase 2 plans

Recap of muon Phase 2 plans

  • Three main aspects (details in backup slides):

  • 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


High rapidity muon hrm layout

High Rapidity Muon (HRM) layout

  • Proposed at ECFA workshop, Oct. 2013


Organization for the muon part of tp

Organization for the muon part of TP

  • Mindful of the very compressed timescale …

    • 1 mo (mid-Jan.): Detector conceptual designs frozen for physics perf.

    • 3 mo (late-March): First draft of sections, plans to complete

    • 5-6 mo (early July): Full draft to internal readers

  • …muon IB approved yesterday a simple organizational structure just for preparing the muon part of the TP

  • A single coordinator (JH) for both main aspects:

    • Consolidation of the existing detector

    • High eta detector extensions

  • Contact persons to coalesce the various aspects of the muon TP

    • Names to be announced in ~1 week


Consolidation roadmap

CONSOLIDATION roadmap

CSC

  • Chamber longevity

  • Radiation tolerance

  • FE longevity / rate capability; back-end electronics

  • Workplan of tests to be performed; milestones

  • Trigger primitive generation

  • Expected performance - Pile-Up ; simulations; degradation scenarios

  • Cost of interventions

DT

Muon Upgrades TP Coordination

RPC

-- Consolidation

of existing detector

-- High eta

detector extensions


High eta extensions

Muon Upgrades TP Coordination

HIGH ETA EXTENSIONS

-- Consolidation

of existing detector

  • What needs?

  • What constraints?

  • Integration in CMS? Si-Tracking? Calorimetry?

  • What options? Costs? Priorities?

  • Workplan; organization; schedule

-- High eta

detector extensions

Simulation, Physics, trigger

New Detectors and R&D

Electronics R&D

Integration into CMS; infrastructure

Costing


Muon upgrades tp organization

Muon Upgrades TP organization

CSC

Contact persons supervise the writing of muon TP parts, report to muon TP Coordination

DT

Muon Upgrades TP Coordination

RPC

-- Consolidation

of existing detector

Simulation, Physics, trigger

-- High eta

detector extensions

New Detectors and R&D

Electronics R&D

Integration into CMS; infrastructure

Costing


Tp muon section planning

TP muon section planning

  • Modeled somewhat after the organization of the 1994 overall TP for the CMS detector

  • Integrate this with the organization chart

  • Pages:

    • Aim for nearly 60 pages on a 1st draft

    • Subsequently fit it into 30 pages as requested

      • Put much information into CMS notes that can be referenced – needs discussion


Tp muon section outline part i

TP muon section outline (part I)

1. Introduction: main motivation and goals for upgrade, outline of the section ~2 pp

2. Phase 1 detector longevity ~10 pp:

2.1 DT (electronics), including R&D needed

2.2 CSC (chamber aging), including R&D needed

2.3 RPC (gas), including R&D needed

3. High eta detector extensions – overall design ~3 pp

3.1 Detailed motivation for new detectors (simulations, trigger)

3.2 Design considerations

3.3 Detector overview

3.4 Infrastructure requirements

4. The GEM detectors within existing coverage (GE1/1, GE2/1) ~4 pp

4.1 System overview

4.2 GEM detectors

4.3 On-chamber electronics

4.4 Electronics layout

4.5 R&D needed


Tp muon section outline part ii

TP muon section outline (part II)

5. The advanced RPC detectors within existing coverage (RE3/1, RE4/1) ~4 pp

5.1 System overview

5.2 Advanced RPC detectors

5.3 On-chamber electronics

5.4 Electronics layout

5.5 R&D needed

6. The eta extension ME0~3 pp

6.1 System overview

6.2 High granularity detectors

6.3 On-chamber electronics (if different from GE1/1 etc.)

6.4 Electronics layout

6.5 R&D needed

7. Performance estimates ~2 pp

8. Project planning (or does this belong in a later section of the TP overall?) ~2 pp

8.1 Organization

8.2 Timescale for R&D and production

8.3 Plans towards TDR

9. Cost estimate ~2 pp


Coordination

Coordination

  • Physics coordination to “drive” the physics discussion for muons

  • Significant interplay with trigger upgrade section

  • Significant interplay with endcap calorimeter (geometry, infrastructure)

  • Need to coordinate with GE1/1 TDR as well as active GEM meetings (as well as muon sim, DT, CSC, RPC meetings)


Next steps

Next steps

  • Fill the contact person positions (~1 week)

    • For efficiency, mostly 1 name/box… some deserving individuals will be left out 

  • Expect to use Monday 5 p.m. General Muon Meeting for

    • A) high eta extension discussions

    • B) existing detector consolidation discussions

  • Given the schedule, defining the detector parameters and right simulations is highest priority

    • ME0 is most interesting: space in Z (thickness), rapidity coverage 2.1-4.0 or ??, number of layers, granularity, polyethylene, steel shielding?

Friday 9:00 in Salle A:

a special “phase 2 ad hoc muon” meeting (apologies to Physics plenary):

https://indico.cern.ch/conferenceDisplay.py?confId=288056


Additionally

Additionally

  • Would like to create “muon phase 2” email list, hypernews forum

  • Need to optimize meeting-ology

    • Try to avoid existing DT, RPC, CSC, GEM meetings

    • Combine some meetings?

    • Request meeting room space?

  • Decisions on scope and important branch points:

    • Will be discussed in muon IB, seek unanimity…

    • but upgrade management has decision power (Tiz)


Backup slides

Backup slides


Longevity of phase 1 muon systems

Longevity of Phase 1 Muon systems

  • Measured rates are linearly increasing with luminosity and with a strong η dependence as expected from simulation

  • No aging effects have been observed so far

    • Test have been performed up to 0.3 C/cm - only forward CSC station will exceed this limit after 3000 fb-1 - new tests including readout will be performed at the GIF++ facility to confirm aging properties of all systems

  •  The muon systems are expected to sustain 3000 fb-1

Integrated charge collected in CSCs after 3000 fb-1

0.3 C/cm limit tested

  • Construction tests of the radiation damage to FPGAs in the DT read-out indicate that they need to be replaced for Phase 2 operation

    • The new electronics design will not limit the L1-trigger rate


Dt minicrate replacement

DT Minicrate replacement

  • There is a host of reasons for minicrate replacement:

    • ASICs and boards will be very old

    • Radiation tolerance is questionable – needs investigation

    • Bandwidth is limited to 300-500 kHz

    • Interventions are very delicate

    • Power consumption is high

    • Performance with high background rates can be much enhanced

  • No “sound bites”, but the totality is a pretty strong case (Cristina)

First level of DT read-out and trigger


Example l1 rate limitation 300 500 khz

Example: L1 rate limitation 300-500 kHz

Estimated occupancy region


Ge1 1 trigger motivation

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


Bending angle and multiple scattering

Bending angle and multiple scattering

  • Practically no sensitivity away from zero in YE3 and YE4

  • ME0 (YE-1) has the best separation from zero

    • Some gain still expected from bending angle in GE2/1

  • RE3/1,4/1 no use from bending angle==> use them only for redundancy

  • ==> next slides focus on bending angle information

  • New simulation results (Krutelyov)


    Me0 me1 1 bending for eta 2 14 2 4

    ME0-ME1/1 bending for eta 2.14-2.4

    close

    far

    • “Close” chambers have worse separation, still pretty good

    • Bending angle works really well in ME0 (not as good as GE1/1 though)

    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


    Ge2 1 me2 1 bending

    GE2/1-ME2/1 bending

    close

    far

    • GE2/1 can give 40% decrease in trigger rate for 2.14-2.4

    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


    Trigger rate reduction summary

    Trigger rate reduction: summary

    New simulation results (Krutelyov)

    ~4.5


  • Login