• Arrival: July 2, 2012
• Departure: September 9, 2012

• Arrival: June 22, 2012
• Departure: August 31, 2012

• Arrival: June 23, 2012
• Departure: after 10 weeks

• Arrival: June 22, 2012
• Departure: August 31, 2012

• Arrival: June 25, 2012
• Departure: September 1, 2012

Chun Sung Bong

Students

Alex Atsushi Takeda

Lisa Lee

Valère Lambert

Max Horton

Chun Sung Bong

• http://hep.caltech.edu/cms/
• https://twiki.cern.ch/twiki/bin/view/CMS/CaltechGroup

Javier Duarte

Emanuele Di Marco

Adi Bornheim

Alex Mott

Artur Apresyan

• Project 1

Many searches for new physics involve signatures of missing transverse energy (MET), which signify presence of weakly interacting particles, such as neutrinos or dark matter candidates. To reliably establish presence of new signal, full control of the MET reconstruction is necessary, free of instrumental noise mimicking the genuine MET. It has been observed in CMS data that sometimes calorimeters record anomalous signals that correspond to particles hitting the transducers which appear as large energy deposits. Such events can then appear as signatures of new physics. The project will study in detail the origins of this noise in HCAL forward detector, by studying MC simulation of such noise hits, and optimizing the identification algorithms based in simulation. As a final stage, the algorithms will be tested in real data, and will be included in default CMS reconstruction to battle the increased rate of HCAL noise in 2012 high luminosity running.

• Project 2

Many searches for new physics involve signatures of missing transverse energy (MET), which signify presence of weakly interacting particles, such as neutrinos or dark matter candidates. To reliably establish presence of new signal, excellent resolution of MET reconstruction is crucial, to separate signals of new physics from known processes, and to measure the parameters of decays of such particles. In 2012 the LHC will attempt to collect as much data as possible by raising number of simultaneous collisions in each bunch crossing, expected average number of collisions being around 30 per crossing. This increased interaction rate will provide more chances to create rare particles. The large occupancy of events will however have a detrimental effect on MET reconstruction, reducing the sensitivity of searches of new physics, since MET resolution will be significantly reduced. The project will work to improving the MET reconstruction performance in CMS, by optimizing the reconstruction parameters used in CMS, and fine-tuning the thresholds of objects used in the MET calculation. The effect will be first studied in high occupancy events using MC and deducing the correlation with generator level quantities, and the results will be compared to CMS data. The improvements in the MET reconstruction will then be tested in the context of searches of new physics in events involving MET, such as SUSY searches.

General Information

Thank you for your email regarding your upcoming summer stay at CERN. This communication is regarding logistics, especially housing and insurance. Making your housing arrangement is up to you. It may be easier and cheaper to arrange rooming but it is entirely up to you. There are a list of resources on the web (see links below) and Ms. Yasemin Yazgan, who is the Relocation Assistant at CERN is also available to assist you.

Important contacts (cc’d in this email):

Ms. Yasemin Yazgan at CERN is the US-CMS contact and Relocation Assistant.

Dr. Iosif Legrand is the Caltech HEP group rep at CERN and needs to sign your registration when you arrive so that you get a valid CERN ID (without which you are not allowed to enter the lab). N.B. Even if your institute has a group at CERN with a different experiment you will get an account with CMS and your host institution will be Caltech for your CERN registration. This will be cross checked with Dr. Legrand when you arrive at CERN.

Dr. Dorian Kcira will help you with computer accounts at the Caltech clusters/T3 and other instructions on getting CMS accounts at CERN and certificates to run jobs on the grid and accessing all the internal CMS pages/twikis/news forums etc. as well as the Caltech/CMS ones.

You will need to arrange your own travel, housing and insurance very soon. I am the Administrative Manager of the HEP group at Caltech and can will help you with any remaining questions. Please keep me informed on all matters regarding health insurance and visas [if needed (French/Swiss)]. This must be done well in advance of your travel date. Also, as soon as you have your travel itinerary finalized, please forward it to me, with a copy to Lupe Llamas at Caltech.

Information on transportation and getting bikes from CERN are included in information below and you can also ask Ms. Yazgan (on the cc) if it is possible to book them now.

Student Housing:

Living in Geneva as an intern: includes health insurance information

http://internationalcenter.umich.edu/swt/work/resources/geneva.html

https://hr-recruit.web.cern.ch/hr-recruit/summies/Housing/Untitled_1.htm

Hostel preferred in Geneva : http://www.cstb.ch/

In France Thoiry: http://www.cstb.ch/

More from Ms Yasemin Uzunefe-Yazgan

Yasemin.uzunefe.yazgan@cern.ch

Relocation Assistant

US-CMS Project Office at CERN

Building 40-R-A02 E19200

CH-1211 Geneva Switzerland

Tel: (+41) 76 487 5868 or 165868

Fax:(+41) 22 766 8361 or 68361

https://twiki.cern.ch/twiki/bin/view/Main/USCMSProjectOfficeCERN

CMS

Advisor; M. Spiropulu

Research Project Mentors/Supervisors at CERN:

Artur Apresyan (Toleman Fellow) , Yi Chen (G3), Chris Rogan (G5) + others from the Caltech Group as needed.

For registrations at CMS: http://cms.cern.ch/iCMS/jsp/secr/reg/regCMS.jsp

Institute: Caltech

Institute Rep: Iosif.Legrand@cern.ch

CMS Workbook: https://twiki.cern.ch/twiki/bin/view/CMS/WorkBook

Caltech T3 accounts and Grid Certificates: Dorian Kcira, dkcira@caltech.edu

CERN

1. Register with CERN and CMS. Carefully follow the instructions on the WorkBookGetAccount Twiki page.

Complete the CMS pre-registration form

o Request a CMS Computing Account by email. AFS & NICE passwords are now the same for new users.

o Validate your accounts by passing CERN computer security and rules course.

1. Register your laptop for DHCP to gain access to the CERN domain.
2. Register with HyperNews
3. Some CERN web pages are protected like the ELog. Send email to " helpdesk@cern.ch" and request to be added to the CMS group.
4. If you are going to CERN, please review the CERN Users' Office web page.
5. Register with the Users' Office in the CERN main building (near the main cafeteria). Before you go to the Users' Office, fill out the CERN Registration Form and Proof of Employment Letter.

o Use "+1-630-555-1212" format for phone numbers in the U.S.

o Use "DD/MM/YYYY" for the date format.

o Talk to Tami Kramer (FNAL/CMS team deputy) in 40/5-A15 (building 40, fifth euro-floor, room A15) -- she can sign your CERN registration form and provide you with a letter confirming your employment at FNAL (or talk to your own team leader if you are not a Fermilab employee).

o You can provide Teri's office on the form, if you do not have your own (phone extension 74799, +41-22-767-4799 from outside CERN).

o If you previously had a CERN ID or "Attestacion" card, you must bring it with you to the Users' Office.

1. Complete CERN Safety Training

o The Users' Office will give you instructions on safety training. Levels 1, 2, and 3 are covered by a video, available at 10:00 and 15:00 in English at room 55/02-005 (near main entrance) -- bring your CERN card to validate/record your training.

o If you will be going down to the CMS cavern (or elsewhere in the LHC tunnel) you must also complete Level 4, which can be done with with an AIS account from http://sir.cern.ch over the web. Generally, all regular CMS members will need to do this (e.g., required for any detector/electronics work and on-site shifts)

1. Obtaining CMS Online Cluster Account

I hope this information is helpful. If you have any questions please contact me and if I can’t answer them for you, I will find the appropriate person to assist you.

CMS Caltech Summer Students Page 2010

Caltech Group Information

Group Meetings:
Every Tuesday 12:30 lunch meeting at CERN : Location varies.

Every Thursday 18:30 CERN (09:30 Caltech) in 31-S-023
http://indico.cern.ch/categoryDisplay.py?categId=1587

We said good bye to our beloved slot : Every Wednesday 17:30 CERN (08:30 Caltech) in 4-S-013

Group Information:
https://twiki.cern.ch/twiki/bin/view/CMS/CaltechGroup

Overview of Caltech CMS Group Activities (from DOE Review 2009)
Harvey's ppt slides

CMS Links

CMS main TWiki page:
https://twiki.cern.ch/twiki/bin/view/CMS

iCMS pages:
http://cms.cern.ch/iCMS/

CMS public pages:
http://cms.web.cern.ch/cms/index.html

Tutorials to get started

CMS for summer students: 07 July 2009

http://indico.cern.ch/conferenceDisplay.py?confId=62144

CMS Physics

CMS Physics Technical Design Report
http://cmsdoc.cern.ch/cms/cpt/tdr/

CMS Electromagnetic Calorimeter (ECAL)

Introduction to ECAL pdf

CMS Photons

CMS Photon Trigger Tutorial ppt

CMS Software (CMSSW)

CMS Offline Workbook:
https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBook

CMS Software Tutorials:
https://twiki.cern.ch/twiki/bin/view/CMS/Tutorials

Summer School Lectures

CERN Summer Student Lectures
http://indico.cern.ch/categoryDisplay.py?categId=346

The 2009 (CERN-Fermilab) Hadron Collider Physics Summer School
http://indico.cern.ch/conferenceOtherViews.py?confId=44587&view=nicecompact

The 2009 European School of High-Energy Physics
http://physicschool.web.cern.ch/PhysicSchool/2009/Bautzen.html

The 2009 MCNet school on the Physics and Techniques of Event Generators
http://conference.ippp.dur.ac.uk/conferenceOtherViews.py?view=ippp&confId=264

Caltech Ph172 - Experimental High Energy Particle Physics

Notes and Links from Andy and Marat
http://www.hep.caltech.edu/~andyyen/ph172/

Summer Students 2012

Table of contents:

Proposals

Procedure

• Please go ahead and submit your proposal for CERN summer students urgently tomorrow Feb 15.
• Link for potential supervisors to submit a project proposal(s): http://hrapps.cern.ch/auth/f?p=112:1
• Login: AIS login name and password
• Once you have completed your proposal please don't forget to hit the "create" button in order to submit your proposal as otherwise it will not be registered.

1. laser calib (and possibly more ECAL related)
2. HCAL noise
3. JetMET
4. photons in pile-up
5. razor pheno (optimization of variables etc) more than one can go in here (chris look the bayesian prop by sezen also)
6. Higgs WW, ZZ, gammagamma
7. upgrade/ high pileup related

Javier

• Razor 1

• Razor 2

with this expected value for the student:

The student will learn advanced computing methods, data regression, maximum-likelihood fitting, and modern statistical methods. The student will also learn about beyond-the-Standard-Model physics, such as supersymmetry, and the phenomenological implications of LHC results.

Emanuele

• H->ZZ: low pt electrons and look-alikes:

• H->WW: use of singularity variables and razor to enhance mass sensitivity

Adi

• New ECAL laser data analysis

• Hgg background studies

Alex

• Trigger

The razor analysis in CMS searches for supersymmetry in a many different channels covering a wide variety of final states and has proven extremely sensitive in 2011. The analysis uses many sophisticated techniques in order to increase the sensitivity to a new physics signal, including careful understanding of the background through maximum-likelihood fits. As with all analysis, this takes quite a bit of time and study to achieve. In 2012, we seek to maximize the likelihood of discovery by implementing a real-time version of the analysis that can look for signs of new physics emerging in the data in real time. The student will implement an analysis to be on a high priority analysis cluster located at CERN, which will be extremely important for maximizing the potential of CMS for discovering supersymmetry in 2012.

Benefits to the student: The student will learn about beyond the Standard Model physics and cutting edge analysis techniques. The student will also learn about online operations and triggering, high-performance computing techniques and event reconstruction.