The circular acceleration channel of the LHC has a circumference of 27 kilometers and a diameter of 3 meters, the ALICE detector is 26 meters long, 16 meters high, 16 meters wide and weighs 10,000 tons, the ATLAS detector is 46 meters long, 25 meters high, 25 meters wide and weighs 7,000 tons, the CMS detector is 21 meters long, 15 meters wide, 15 meters high and weighs 12,500 tons, the LHC bottom quark detector is 21 meters long, 10 meters high, 13 meters wide and weighs 5,600 tons, the full-section elastic scattering detector is 440 meters long, 5 meters high, 5 meters wide and weighs 20 tons, and the LHCf detector has two, each 30 centimeters long, 80 centimeters high and 13 centimeters wide, weighing forty kilograms.

These are just a few of the main equipment of LHC, if you count his power supply equipment, control system, monitoring system and so on, you can imagine how much effort it takes to complete the maintenance of such a big guy.

So when Kahn, Barak and others started their leisurely vacation with the joy of winning the Triple Crown, Lu Qiujian was even busier when the competition schedule was most intensive; Dr. Evans already regarded Lu Qiujian as his heir, so he arranged all the work that could be handed over to others to Lu Qiujian, and he was only responsible for supervising to see if he had made mistakes, and reporting to the higher authorities, and at the same time did not forget to help Lu Qiujian ask about the experimental plan.

"A small number of the room temperature magnets of the ALICE detector are magnetically weakened and need to be replaced in time; there are several places in the pipes of the annular accelerator that have metal fatigue, which may cause liquid nitrogen leakage in the later tests, and I have marked the specific location and notified the relevant departments for maintenance; and "At the end of a busy day's work, Lu Qiujian reported to Dr. Evans with a thick test report."

Dr. Evans listened to Lu Qiujian's report, and at the same time marked the problems found on the computer on the 3D model of the LHC, and when Lu Qiujian's report was finished, he touched his chin and carefully read all the problems found today, and said after a long time, "Judging from the current situation. The overall condition of the LHC is better than expected, maybe we will be able to complete the maintenance ahead of schedule!"

"It is to pray that no more serious problems will be found in the second half of the work. "As of today, the work plan for maintenance has been completed, and according to the information returned so far, the state of LHC is maintained well.

"Your experiment plan is indeed better than what we have done before!" Dr. Evans said, turning the monitor in the direction of Lu Qiujian, pointing to the red dots he had marked, "You see, here, here, and here, these problems are all caused by the first test according to the test plan we have specified; The loss in these places has decreased significantly, and the bubble damage caused by the subsequent tests is not half of the first test! I think the reason why the LHC is maintained better than expected is because you fully consider the bearing capacity of each component of the LHC when formulating the experimental protocol!"

"And your strict requirements and supervision of this project for the past ten years!" Lu Qiujian calmly accepted Dr. Evans's praise, letting the people of CERN understand that their experimental control ability will help them successfully pass the review of the dark matter detection experiment plan, and at the same time, the LHC can maintain such a state is also inseparable from Dr. Evans's decades of meticulous work, Lu Qiujian's praise is extremely sincere!

"I think I can give myself some time off, I haven't been back to Ireland for a long time since the Higgs boson detection experiment began! It's enough for you to take care of the LHC!" Dr. Evans said, half-jokingly, half-seriously.

"You can do this! I'm afraid you can only have a few days to spare recently, if the dark matter experiment is officially launched, you will probably be busier than before, right?" Lu Qiujian was also happy that this respected senior could take a break. After all, Dr. Lynn Evans is almost sixty years old, and all the functions of his body have declined, which cannot be compared with ordinary young people, let alone a demon like Lu Qiujian!

"I'll take a look at the work schedule for the future!" Dr. Evans stood up and walked over to the large work schedule posted on the wall. After pondering for a while, he said happily, "The next five days of work are not difficult, you can lead them to complete it! The work on the sixth day involves some areas that you have not carefully understood before." I will probably need to be on the spot to help! It looks like I could really take another short vacation!"

"Then take advantage of this time to take a little rest!" Dr. Evans judged the follow-up work in line with him, and Lu Qiujian continued, "If it is a vacation back to Ireland." Then come back and bring me a few bottles of beautiful pubs! I've been salivating over Irish whiskey and dark beer for a long time!"

"Of course!" Dr. Evans happily agreed, "I'll bring some more, just in time for the celebration banquet after the overhaul and maintenance is completed!"

The next day, Lu Qiujian sent Dr. Evans to the airport, and after coming back, he began to work intensely and hecticly, and today he also found no major problems, and sent a text message to Dr. Evans that everything went well, and Lu Qiujian let his team go off work and rest.

Lafayette can go back to rest, but Lu Qiujian will continue to be busy, their current work only includes repairing and maintaining the LHC, and Lu Qiujian still has tasks to complete, such as the advancement of dark matter experiments, the review of the manuscripts of the mathematical journal he owned, the training of the three students of Beijing Normal University, and the work of Professor Xufut's laboratory.

Unlike usual, today he did not return to his residence immediately after finishing his work, but went to the office of another project team at CERN, where he made an appointment with the project leader, Professor Ding Zhaozhong, to meet today.

Professor Ding Zhaozhong has been leading the Alpha Magnetic Spectrometer project at CERN for a long time, a large-scale particle physics experiment that will specifically observe electrons, positrons, protons, antiprotons and nucleons under high-energy radiation in space, and find evidence of the existence of dark matter and antimatter.

It can be said that Professor Ding Zhaozhong's current work has a different path from Lu Qiujian's, and as a world-class experimental physicist, Professor Ding Zhaozhong's influence is very great. )

PS: The second and third children of Ding Zhaozhong's family are called Ding Zhaohua and Ding Zhaomin respectively, if there is a fourth brother, what should it be called?