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October, 2014

Live, Life, and Love at CERN (Part 6)

A tunnel to a particle detector and its Large Hadron Collider (LHC) at CERN.

©2014 Bagus Hanindhito |  Geneva, Switzerland | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/40sec | f/7.1 | ISO640 | Aperture Priority | Auto Exposure

Participating in some workshops held by CERN added up my experience and knowledge. It becomes “a must” during my stay at CERN.

In this article, I will share about the workshop I have participated during my stay at CERN. The workshop was arranged by committee exclusively for CERN Summer Student. But, some of the workshops are available by request for the public visit. Because of the limited number of seat for each workshop, the summer student must reserve their place on the first-come-first-served basis. I only participated in the workshop which I was interested in, it did not take a lot of time, and it did not overlap with my meeting schedule.

“The workshops at CERN was adding more precious experience during my stay at CERN. It was a must

The ROOT for Summies Workshop to introduce data analysis framework, ROOT, developed at CERN for its experiments.

©2014 Bagus Hanindhito |  Geneva, Switzerland | Sony Xperia SP C5302 | 1/15sec | f/2.4 | ISO1250 | Superior Auto | Auto Exposure

Experience the CERN’s Data Analysis Framework : ROOT

The first workshop was Root for Summies. It was mainly an introduction to ROOT, a data analysis framework developed at CERN. This workshop was divided into several sessions so that the participant could also learn on how to use ROOT. Unfortunately, I only participated in the first session only. Basically, ROOT is an OOP program and library that was designed for high computing efficiency to handle the vast amount of data generated by experiments at Large Hadron Collider. It can handle big data processing, statistical analysis, visualization, and storage.

MadGraph Workshop at CERN

©2014 Bagus Hanindhito |  Geneva, Switzerland | Sony Xperia SP C5302 | 1/50sec | f/2.4 | ISO100 | Superior Auto | Auto Exposure

Simulating Particle Physics Event : MadGraph

The next workshop is MadGraph workshop. MadGraph is a software used for high-energy physics (HEP), especially for particle colliders. Its framework provides all the elements necessary for Standard Model and Beyond Standard Model simulation. For example, cross sections computation, hard events generators and other relevant tools for event manipulation and analysis. The user requests a process (including hadron collider process) then MadGraph will return all subprocess, Feynman diagram, a function that needs to be integrated, complete package for event generation, and plots.

Our Particle Detector Engineer and Scientist ready to create a new particle detector!

©2014 Bagus Hanindhito | Geneva, Switzerland | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/30sec | f/7.1 | ISO500 | Aperture Priority | Auto Exposure

Building Your Own Particle Detector : Cloud Chamber

In this workshop, I created a simple particle detector using Cloud Chamber. Cloud Chamber is a device that contains air or gas supersaturated with water vapor, and that is used to detect charged particles, X-rays, and gamma rays by the condensation trails that they produce (definition in English dictionary). In this workshop, the Cloud Chamber will be used to detect cosmic rays which are a high-energy subatomic particle that bombard the Earth from outer space every second. It is harmless and invisible, but we can detect the track of this particle using the Cloud Chamber.

The Cloud Chamber that I made uses evaporated alcohol and dry ice. The basic principle is as follows.

If air is saturated with water vapor and then cooled, tiny droplets of mist form around floating bits of dust or other material. They also form readily around ions; electrically charged atoms or groups of atoms. When a charged particle, such as a proton, passes through the chamber it leaves behind a trail of ions as it strikes molecules in the air along its path and tears away electrons. Mist droplets form around these ions, creating a cloud track.

 

 

The newly built Cloud Chamber was being observed in dark situation to make it easier to see the particle tracks.

©2014 Bagus Hanindhito | Geneva, Switzerland | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/20sec | f/7.1 | ISO3200 | Aperture Priority | Auto Exposure

Do you see the particle tracks? It is a sign that the cosmic rays are around us and hit us every seconds!

©2014 Bagus Hanindhito | Geneva, Switzerland | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/30sec | f/3.5 | ISO1250 | Normal Program | Auto Exposure

Yeay! We did it!

©2014 Bagus Hanindhito | Geneva, Switzerland | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/100sec | f/7.1 | ISO3200 | Aperture Priority | Auto Exposure

One of the local server at CERN. Someone needs to tidy-up that cable.

©2014 Bagus Hanindhito | Ferney-Voltaire, France | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/30sec | f/7.1 | ISO3200 | Aperture Priority | Auto Exposure

Learning The Blood Vessel of Data Communication : Computer Network

The experiments at CERN generally generate gigabyte of data each second! This data must be processed and stored as fast as possible. Therefore, the computer network is a critical part of the computer system at CERN. It connects the data acquisition systems to a data center and anything in between. High-speed and reliable computer network is needed at CERN. In this workshop, I had a chance to learn computer system network and its implementation at CERN. For me, it was very fun to participate in this workshop.

The Computer Network Workshop room. So much monitors!

©2014 Bagus Hanindhito | Ferney-Voltaire, France | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/30sec | f/7.1 | ISO3200 | Aperture Priority | Auto Exposure

Learning and Play Around with an expensive network switch.

©2014 Bagus Hanindhito | Ferney-Voltaire, France | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/20sec | f7.1 | ISO3200 | Aperture Priority | Auto Exposure

Found these GPU array. They said that they were currently having fun with OpenCL on that GPU.

©2014 Bagus Hanindhito | Ferney-Voltaire, France | Canon EOS 60D | EF-S18-55mm f/3.5-5.6 IS II | 1/20sec | f/7.1 | ISO3200 | Aperture Priority | Auto Exposure

I think that’s all of my exciting life during my stay at CERN. I will wrap-it-up on the next article (Part 7). It should be the last part. See you!


to be continued…

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