MY SUMMER AT CERN
By Muhammad Zubair Asyraf Bin Jalal
Tell us about your work at CERN.
My research in the GEM Laboratory focused on assembly and retrofitting of the Long and Short Super-Chamber of the GEM detector. The work included an assembly procedure that follows the newly developed standard quality control tests, to verify satisfactory functionality of the GEM chamber. With its assembly verified, the Super Chamber can be tested for QC6, Cooling Test, QC 7 & 8.
Not all parameters for the assembly of the Super-Chamber GEM technology are finalised, so assembly modifications provide important data for future Super-Chamber assembly without jeopardising any resources of the CMS. During my first four weeks, I’ve completed several installations and assembly of the Super Chamber required for further testing. I’ve also participated in the High Voltage test, which is the preliminary testing of the GEM board before electronics integration. Several small modifications are required along the assembly line for safety measures in order to protect the GEM and its electronic housing due to the fragility of the optical fibres embedded within the Super Chamber. With a looming deadline, pressure to completely assemble all the GEM detectors for installation on the CMS grew higher with each passing day.

Figure 1.1 GEM board after passing the QC6

GEB Board with attached optical fibre to the Optical Hybrid System.

Gas line across the GEB for the flowing of CO2 + Argon gas inside the GEM.
How did you spend your time outside of work during CSSP?
I have participated in several activities outside of CERN’s working hours, as follows:
1. Welcome Drinks