News

| sohurst | Detector
In the same way that loud background noise does not allow us to listen to a conversation or appreciate a piece of music, so too the CMS detector needs a quiet environment to optimize data taking and analysis.   New shielding has been successfully…
| sohurst | Detector
In this short series, we look at the different types of tests and steps needed for CMS to run at the precision the experiment requires. Find part 1 here! Part 2 First Beam Arrives So far, the only tests and alignments that have taken place have…
| sohurst | Detector
It is compelling to picture large physics labs with lots of sparks and heavy levers that wake up big, important experiments with sparks and loud bangs. Even if this were the case, CMS is too big and too complex to be started up by a simple pull of a…
| fbaldass | Detector
  CMS has recently conducted the largest deletion campaign in its history, deleting roughly 85 Petabytes (85’000’000’000’000’000 bytes) of data from the magnetic tapes, in order to free up space for the Run 3 collisions. No original raw data have…
| nstathak | Detector
  Data taking is restarting in CMS for the continuation of Run 3 - and with it the enormous responsibility of keeping the data safe and making sure it is usable in order to conduct the physics analyses. Last April 2023, the Large Hadron Collider…
| nstathak | Detector
  Everything started in early September 2022 while, during the ECAL Operations meeting that we hold every Wednesday morning, our veteran electronics expert, Evgueni, reported that the voltage in a control card was unstable. He prophetically proposed…
| fbaldass | Detector
This October, the first component of the milliQan detector has been installed on top of the CMS experimental cavern, and it is now taking data at the high energy of LHC RUN3. The milliQan detector project was proposed as a new LHC experiment in 2016…
| fbaldass | Detector
While the CMS detector takes data 24 /7, physicists take turns in the control room every 8 hours, ensuring continuity of operations and keeping the detector running continuously. Experts located around the world are present at all times to respond…
| ajafari | Detector
The CMS detector, illustrated in Fig. 1, is centred around the largest and highest granularity silicon tracker ever built, including around twenty thousand detector units structured in thin cylindrical layers that extend over nearly 6 metres along…
| ikhalid | Detector
The Large Hadron Collider (LHC) at CERN is gradually restarting and in the summer bunches of protons will collide again at high energy, marking the start of Run 3.  Is CMS ready to manage the big amount of new data? The CMS Data Acquisition and the…
| Anonymous | Detector
Running toward the start of Run3 at the Large Hadron Collider (LHC), the CMS experiment completed one of its last and crucial steps: the big solenoid magnet has been powered on to reach the nominal magnetic field of 3.8T on March 4th 2022. Hidden…
| ikhalid | Detector
A few months are left before the start of Run 3 at CERN. With the timely completion of all upgrades planned for Long Shutdown 2 (LS2), in the last weeks the CMS detector has been set in its closed configuration. If this sounds like an ordinary or…