# Presentation: 193755

## CMS 101: Overview

- Sarah Eno

- ( thanks to people I stole slides from: Dan Green, P. Foka, Y. Schutz, R. Forty, F. Ferro, M. Szcaekowski, public CERN web pages

## Purpose/Overview of Course

- General Introduction: Sarah Eno (30’)
- Introduction to the Detector: Jim Freeman (30’)
- Introduction to the Software: Yuri Gershtein (30’)
- Introduction to the FNAL UAF: Hans Wenzel (10’)
- Introduction to the Trigger Table: Darin Acosta (30’)
- The LPC and You: Sarah Eno (15’)

-  Learn enough CMS jargon to understand many CMS week talks
-  Learn who’s who in CMS

## Outline

-  Some basics on the LHC accelerator/detectors
-  Some basics on physics at 14 TeV
-  International CMS
-  Life at CERN
-  US CMS
-  The LPC

## The Accelerator

- In the LEP tunnel

## Accelerator Parameters

- http://lhc-new-homepage.web.cern.ch/lhc-new-homepage/

## Status of Accelerator Construction

- http://lhc-new-homepage.web.cern.ch/lhc-new-homepage/DashBoard/index.asp

- Easy to see if the accelerator is falling behind.  So far, its not.

## Short Crossing Time

- (signal shape in ecal)

- time-of-flight to:
-                =0         =2.4
- ECAL:   4 ns          10 ns
- HCAL:   6 ns         13 ns
- Coil:      10 ns            -
- Muon 1: 13 ns       25 ns
- Muon 4: 24 ns       36 ns

- ECAL (100 ns bins)

- HCAL (25 ns bins)

## Detectors

- If you don’t know which detector this is, then I’m glad you are here!

## Other LHC Experiments: ATLAS

- CMS is 14.6 m tall, ATLAS is 20 m tall.
- CMS has its solenoid outside its ECAL, ATLAS has ECAL outside the solenoid
- Tracking: CMS has 4T over 1.3 m radius, ATLAS has 2 Tela over 1.2 m radius.

## ATLAS

- From the time the US was just joining LHC, so ignore the US numbers/

- Atlas has lots of French, Brits, Italians, and Germans.
- CMS has Italians, Russians, French, Germans

## Other LHC experiments: LHCb

- Turns on at the same time as ATLAS and CMS
- Looks like a fixed target experiment: covers 1,9<<5.3

## Other LHC experiments: Alice

- Heavy ions (CMS will also do heavy ions)

**central**** ****barrel**** **

**di-muon spectrometer**

** ****pp and pA**
** ****for comparison with PbPb **
** ****for their own merit**** **

** ****global pp properties**
** ****jet physics**
** ****diffractive physics**

- Starts up at same time as ATLAS, CMS, running pp.  Nominal first run for heavy ions: 2008

## Alice

- Tracking with low PT cutoff and Particle ID

## TOTEM

- Really part of CMS

- Elastic scattering experiment.

## Basic Physics

## dN/d

- Khoze, Martin, Ryskin hep-ph/0007359

- Range comes mostly from the difference between the CDF and E710 cross sections at 1.8 TeV.

- total cross section

- Fraction elastic, diffractive

- Total cross section 70 mb at Tevatron (inelastic is 46), 100 mb at LHC (50-60).

## dN/d

- Chris Seez

- Mean number of inelastic interactions per crossing at 2E33 is  3.5.  At 1034, it’s 17.

## Higgs Reach/Time Scales

- If we can start up at 1/10th design luminosity, we’ll discover a Higgs with mass greater than 130 GeV within 1 year.  Will cover entire theoretically allowed range with 1 year of design luminosity.

## SUSY reach/ TimeScales

**Cosmologically plausible region of parameter space covered within 1 year 1/10****th**** design luminosity.  1 year of design luminosity covers all regions interesting for EWK symmetry breaking**

## International CMS

- Who are these two men?

## CMS: the countries

- Ordered by size:  USA (503 collaborators), Italy (373), Russia (333), CERN (197), France (138), Germany (100)

## Countries by Detector

- ECAL: UK, France, USA, ...
- HCAL: USA, Russia, ...
- Muon: Italy, USA, ...
- Track: Italy, USA, ...
- DAQ: Italy, USA

## International CMS Organizational Structure

-  collaboration board
-  management board
-  finance board
-  technical coordination group

- Rather complex...

- http://cmsdoc.cern.ch/docofficial.shtml

- http://cmsdoc.cern.ch/CMSstructures/organization.html

## Collaboration Board

- Chair: L. Foa (Pisa), Deputy: F. Pauss (Zurich)

- Contains the institution reps and others

- Collaboration Board Advisory Group:
- Ingram (PSI), Brown (RAL), Pauss, Foa

## Management Board

-  Spokesman: Della Negra
-  Deputy spokesman: Virdee
-  Collab Board chair : Foa
-  Collab board deputy: F. Pauss
-  Resources Manager: Petrilli
- Technical Coordinator: Herve
-  Deputy technical coordinator: Ball
-  Electronics coordinator: Sharp
-  Conference Committee Chairperson: Muller
-  Management Board secretary: Ingram
-  Collab board secretary: Ingram
-  Advisors to spokesperson: Castaldi, Flugge
-  Physics Advisor: Denegri
- GLIMOS: Schaefer
- Technical advisors to technical coordinator: Campi, Faber, Rykac

- Plus “regional reps”
- CERN: Foeth
- France: Gaure
- Germany: Schael
- Italy: Tonelli
- Russia: Matveev
- Swiss: Tauscher
- UK: Brown
- USA: **Newman**
- Other MS: Wulz
- Other non-MS: Chen, **Baarmand**

## Steering Committee

- Spokes: Della Negra
- Deputy: T. Virdee
- Tracker: Rolandi, Hall
- EM: Bloch, Rander
- HCAL Barrel: **Green**
- HCAL Endcap: Golutvin
- Muon Barrel: Gasparini
- Muon, Endcap: **Mitselmakher**
- DAQ: Cittolin
- Trigger: **Smith**
- Physics: Sphicas
- Computing: **Stickland**

- Technical coordinator: Herve
- Deputy: Ball
- Electronics: Sharp
- Resources: Petrilli
- Collab board chair: Foa

## Others

- Finance board
- Technical Coordination Group
- Committee for Nomination of Speakers
- Editorial Board
- Annual Review Committee

## Typical Meeting Schedule

- CMS and CPT weeks are of general interest.  Each detector system also has “weeks”.

## International CMS web page

- _[http://cmsdoc.cern.ch/cms.html](http://cmsdoc.cern.ch/cms.html)_
- Ugly, but if you poke around long enough, you’ll find what you need.

## International CMS Agenda Server

- Quite useful. Find talks from most meetings.

- http://agenda.cern.ch/displayLevel.php?fid=2l76

## Acronyms

- CPT: computing, physics, trigger
- PRS: physics, reconstruction, selection
- MB: management board
- CCS: computing, core software, production
- TriDAS: Trigger and data acquisition system
- PROM:  PROject Management (projects that cross between various CMS subgroups)

## PRS

- Physics, Reconstruction, and Selection:
- Where the analysis action is at.

- http://cmsdoc.cern.ch/cms/PRS/www/prs.php

- Paris Sphicas, the PRS leader, 10 years ago

## PRS Structure

- Physics, Reconstruction and Selection.

- Run by: Paris Sphicas (Athens, ex-CDF)
- ID groups:
- ECAL/e/gamma:  Chris Seez (London) and Yves Sirois (Ecole Polytechnique)
- HCAL/jet/met: Chris Tully (Princeton) and Jim Rohlf (Boston)
- Muon/mu/: Ugo Gasparini (Padova) and Darin Acosta (Florida)
- Tracker/b/tau: Marcello Mannelli (CERN) and Lucias Silvestris (Bari)
- Physics Groups
- Heavy Ions: Bolek Wyslouch (MIT)
- Higgs: Sasha Nikitenko (London, ITEP)
- Standard Model: Joachim Mnich (Aachen)
- SUSY/BSM: Luc Pape (CERN)
- Steering committee: also includes Denegri, Stickland (CCs), and Cittolin (TriDAS)

## PRS Meeting Schedule

- Alternate Tuesdays 16:00 (cern time of course)
- muon, tracking
- Alternate Wednesdays 16:00
- e/gamma, jet/met
- Most of the physics groups only meet during CPT weeks

- Easy to attend via VRVS

## VRVS

-  go to radio shack and buy a headset.  If you feel rich, buy a video camera.  Don’t use a table mike, etc unless you get expensive hardware.  Instead, use a cheap headset.
-  go to _[www.vrvs.org](http://www.vrvs.org/)__ and download the software_
-  MUTE WHEN YOU ARE NOT TALKING!!!

- CMS uses VRVS for video conferencing.  Get over it!

## Getting a CERN computer account

- http://cmsdoc.cern.ch/comp/comp_quick_guide.html#AccountCreation

## Getting onto International CMS mailing lists

- First, you need a CERN mail account and password.
- Then go to _[http://wwwlistbox.cern.ch/](http://wwwlistbox.cern.ch/)_
- And log onto SIMBA using this account/pass
- You might try searching on lists containing “cms”

## Life at CERN

## Where is CMS?

- Need to cross the border to get from the cafeteria/building 40 to CMS.  Carry your passport!  Slow down, but only stop if they ask you to.

## The Lab: Useful things

- Building
- 40

- The “nice” hostel

- cafeteria

- The Bermuda triangle of CERN

## Building 40

- Office space in building 40?  Good luck!!!

- Main building for CMS/ATLAS offices

## Coffee and pastries?

## CMS Secretariat

- http://cmsdoc.cern.ch/peoplesecr.shtml

- Paper supplies, pens, cute folding cubes of CMS pictures, cute calenders with CMS pictures, etc.

## Salavat Abdullin

- Official contact person at CERN for the LPC.
- He’s your man on the ground, when only that kind of help will do!
- _[Salavat.abdoulline@cern.ch](mailto:Salavat.abdoulline@cern.ch)_ (russian names tend to have english and french spellings)

## Tami Kramer

- Tami.kramer@cern.ch

- Can help with various things.  Rentals, room reservations when building 40 is full, hostel reservations, all kinds of useful things...

- _[http://uscms.web.cern.ch/uscms/](http://uscms.web.cern.ch/uscms/)_
- Many useful hints on life at CERN!!!!!!!!!!!!!

## the Cafeteria Patio

## Arriving at CERN

-  Swiss and French electricity adaptors have slightly different sizes.  Both have 2 round prongs.
-  rental cars usually have manual transmissions

- If you are staying at the hostel and arrive on the weekend, the guards will have the key.  Ask the drive to go to the CERN gate with the flags.

- Very hard to get “hostel” room in summer.  Registration begins April 1.  Sometimes (especially for FNAL employees) Tami Kramer and Terry Read can get you rooms, as they get priority to reserve, and reserve a block.

## Hotels

- There aren’t any particularly nice ones left at reasonable prices.  Anything less than $100/night is not air conditioned (can be a problem in July and August). If you want eggs for breakfast you have to pay the $100/night.
- I usually stay at the Chateau de Farges (but I understand its closing soon) And its very hot in the summer. Its 10km by car. But the price is right (35 euros/night at a CERN rate).
- The Bois Joli is also OK but noisy until midnight (its got a big restaurant) (45 euros a night). It is probably 8 km from the Meyrin site but only 5 km to the Test Beam.
- The hotels in St. Genis are pretty bad. Hotel Sofia may be OK, but its pretty expensive for what you get (about 65 euros/night).
- The hostel (if you can get in) is the only place within walking distance.

- Advice from Andris Skuja

## CERN Users Office

- Where to get attestation and ID card.
- In the building with the cafeteria.
- ID needed to get into CERN after hours

## Useful French Phrases

- L’addition, si vous plait.
- Cote du rhone

## Fun

- Take the bus into Geneva.  (20 minutes)

## pictures

- Who makes the nice pictures on the CMS TDR covers?

- Sergio Cittolin

## US CMS

- By size
- FNAL: 72
- Cal Tech: 32
- Florida: 27
- UCLA 24
- Wisc.  23
- Purdue 19

## US CMS: non-elected bureaucrats

- Research Program Manager: Dan Green,  Deputy: Bob Cousins

- Level 2 managers:
-  **pixels**: Bruno Gobbi (Northwestern).  **tracking**: Joe Incandela (UCSB)  **Endcap Muons**: Dick Loveless (Wisconsin), Giogio Apollinari (FNAL) **DAQ**: Vivian O’Dell (FNAL) **ECAL**: Roger Rusack (Minnesota) **HCAL**: Andris Skuja (MD) **Trigger**: Wesley Smith (Wisconsin)

- Software Management: Lothar Bauerdick
- (level 2 Bob Clare, UCR and Ian Fisk, FNAL)

- CMS Maintenance and Operations: Jim Freeman (FNAL)

## US CMS: Elected Bureaucrats

- http://uscms.fnal.gov/uscms/organization/organization.html

- US CMS Collaboration Board: chair: Harvey Newman (cal tech), deputy chair: Vasken Hagopian (FSU)  members: 1 rep per institution.
- US CMS Advisory Board:  chair and deputy the same, + 1 elected rep per system + US physics coordinator + outreach coordinator + software/computing manager + construction project manager
- US CMS Advisory software and computing Board (6 elected positions)
-  US CMS election committee (2 elected positions)
-  US physics coordinate (1 elected position) Jim Branson (UCSD)
-  various subsystem institutional boards (1 rep per institution)

- Very elaborate elected structure

## US CMS Meetings

- 1 per year in late spring, place rotates.  Good place to network.
- Make sure you are on the us cms mailing list by contacting (???)

## Life in the US

## US CMS Web page

- http://www.uscms.org/

## Getting an account at FNAL

- http://www.uscms.org/scpages/general/uaf/accounts.html

## The LPC

- Will discuss this in my second talk, at the end