Danny Weiterkamp, Caltech

Physics

Gillian Kopp, CERN, Dark Matter + displaced photons / Timing

Daniel Gawerc, CERN, Dark Matter + displaced jets / Timing

Stephanie Kwan, Caltech, Higgs to gamma gamma lepton boxes

Twiki of past years

Twiki pages of the 2016 Summer Student season with links to years before that on the bottom this page :

https://twiki.hep.caltech.edu/twiki/bin/view/Main/Summer2016

AI Methods

Tutorials and Guides

CMS-Caltech ROOT tutorials

Practical Deep Learning for Coders

Projects

Instrumentation

Silviu-Marian Udrescu, CERN, "Detailed simulation of planar semiconductor sensors for precision timing" with Adi, Si and Cristian

AI Methods

this form

Accounts

If you ARE GOING TO CERN:

• CHECK YOUR VISA STATUS RIGHT NOW. For US citizens spending less than 90 days, you do not need a visa.
• START THINKING ABOUT HOUSING. See next section.

Practicalities

Computing Accounts

Complete the CMS pre-registration form

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

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. If you are going to CERN, please review the CERN Users' Office web page.

• full name (Name Surname)
• preferred username
• preferred shell (bash, tcsh)
• ssh public key(s)
• email address
• Certificate DN
• CERN hypernews account name

Housing at CERN

From a local university, including housing and health insurance information: http://mygisa.ch/guide/

CERN-specific housing advice (rest of site is also very useful): http://newcomerwelcomecenter.weebly.com/short-term-rentals.html

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

Also see the CERN User's Office site: http://usersoffice.web.cern.ch/regional-info-geneva-france

<a rel="noreferrer" target="_blank" href="http://www.glocals.com/">http://www.glocals.com/</a>

<a rel="noreferrer" target="_blank" href="https://www.airbnb.com/">https://www.airbnb.com/</a>

http://www.residhome.com/uk/hotel-residence-aparthotel-prevessinmoens-192.html -- a bit out of the way, but with a CERN bike or the CERN shuttle from Prevessin site it's tolerable.

Immediately after arrival at CERN

Register your laptop for DHCP to gain access to the CERN domain.

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 Home Institution Declaration

2017 CMS-Caltech-CERN Summer Students

Instrumentation

Student 1

AI Methods

Vitória Barim Pacela, CERN, LCD particle ID and regression with Amir, Maurizio and JR

Silviu-Marian Udrescu, CERN, LCD particle ID and regression with Vitoria et al.

Yikai Huo, Caltech, Charge Particle Tracking (with Dustin and Stephan)

Sarang Mittal, Caltech,

Nishad Maskara, Caltech,

Avikar Periwal, Caltech, Based Multi-class Jet Tagging with Deep Learning (idea from Jesse Thaler)

Physics

Jamie Bamber, Caltech, Dark Matter (low mass)

Gillian Kopp, CERN?, Dark Matter + displaced photons / Timing

Daniel Gawerc, CERN?, Dark Matter + displaced jets / Timing

Projects

Detailed simulation of planar semicondutor sensors for precision timing

Planar semiconductor sensors are used for precision timing detectors in high energy physics. In calorimetric applications the sensors are exposed to a shower of ionizing radiation induced by a high energetic primary particle. The goal of the project is to perform simulation studies of the shower interactic with the sensor to get a precise understanding of the energy deposited in the sensor material. Different sensor materials such as Silicon, Silicon-Germanium and Cadmium-Tellurid will be studied as well as different sensor geometries exposed to different parts of the particle shower. The simulations are preformed with the GEANT simulation package either in an enbedded application derived from CMS sofware or in a standalone application.

Simulation studies of the CMS ECAL photon timing using crystal calorimeter and timing layer information.

The Phase II upgrade of the CMS detector will enhance the timing performance of the crystal calorimter to about 20 ps and possibly add a precision timing layer in from of the calorimeter. The calorimeter is primarily destined to measure the time of arrival for high energy electromagentic clusters and the timing layer will target charged particles. However high energy electrons will feature a precise time measurement in the timing layer and the calorimeter. Further, the electron impacting on the calorimeter will result in a certain amount of front leakage. The goal of the project is to study the timing performance for electrons using both detectors, the impact on front leakage on timing measurements in the timing layer and to study the viability to use front leakage for calibration of the timing layer as well as timing measurements of photons.

Detailed study of regression based photon energy reconstruction

Regression algorithms are used to reconstruct the energy of photons in CMS. The algorithms use the topology of the hit pattern in the CMS ECAL and additional information from other subdetectors if available. The algorithms are trained on large MC samples. The validation of the trained algorithms is performed on MC samples as well as data. Choosing the input variable to the regression and evaluating the performance of the regression requires detailed knowledge of the respective detectors, the physics underlying the detection process and the capabilities of the simulation. The goal of the study is to develop a evaluation strategy for the regression results which is based on numerical evaluation of the results. As a second step a feedback mechanism shall be implemented which systematically tests the choice of input variables and their impact on the regression results.

Evaluation of the timing performance of light based detectors

Scintillator based detectors with SiPM or MCP readout are used for precision timing measurements of ionizing particles. The goal of this project is to use the exisiting picosecond laser test setup at CIT to test the performance of SiPMs, Scintillator/SiPM as well as Scintillator/WLS/SiPM combinations to evaluate their timing performance.