Chapter 765

The efficiency of the Materials Research Institute has always been very high. In just two days, the experimental team responsible for the divertor modification was pulled together, with Wang Wei as the team leader, responsible for specific experimental work, while Xu Qingzhou, as before, was responsible for support.

"In the simulation experiment, the coverage uniformity of the liquid metal deteriorated at 45MW/m, and the exposed area exceeded 5%."

"Moreover, at 45MW/m, the surface temperature fluctuated by ±8°C, exposing the defect of insufficient microchannel heat dissipation. Finally, at 50MW/m, the diversion efficiency plummeted to 78%."

In the seminar room, Ren Xiaoling explained the situation of the local simulation to 8 researchers. She was one of the first people to participate in the simulation with Xu Qingzhou, so she was naturally assigned to Wang Wei's team.

After Ren Xiaoling finished the introduction, Xu Qingzhou told everyone his thoughts: "Structural optimization is needed. My plan here is to increase the density of bionic microchannels, which is estimated to increase the heat dissipation rate by 30%. At the same time, spraying MgF coating, if optimistic, can reduce the evaporation rate by 50%."

Half an hour passed.

"Then when we unfold the experiment, we will promote these two plans simultaneously," Wang Wei said calmly.

"Okay, if you have any questions, come to me anytime."

Xu Qingzhou handed the liquid metal experiment to Wang Wei and returned to his office first.

"Tsk tsk, a divertor whose heat load can reach 50MW/m, if I hadn't seen the data, I would have really thought it was a joke."

A researcher sighed.

"Which of the projects in our institute, if taken out, wouldn't make controlled nuclear fusion tremble?"

"That's true."

"Alright, let's start working. Although Professor Xu gave the direction, we are just starting, and there are thousands of things to do."

Wang Wei is now considered a middle-level leader of the institute. Now he has restrained himself a little, giving people a steady feeling, unlike before when he often quarreled with Gong Yunfei.

"Hehe, okay, let's start."

Wang Wei was busy here, and Xu Qingzhou had already returned to his office.

The work in the institute was advancing in an orderly manner.

Academician Ren Nan led people to do the magnetohydrodynamic diversion technology plan, Professor Zheng Xu was studying the liquid lithium-lead bionic microchannel blanket to increase the neutron capture rate and thus increase the tritium breeding ratio (TBR), and Professor Zhao Shengwen was organizing manpower to be responsible for the iterative upgrade of the first wall materials.

Everyone performed their duties.

"The time for the startup and the next stage of the experiment can basically be set."

Xu Qingzhou squinted, holding a teacup and standing in front of the window. "At the current speed, in mid-October, around the 12th, the experiment can basically be started."

"Conduct two ignition experiments. The first time is to verify the device's net energy gain capability, for 1 minute. The second ignition will directly verify the maintenance time of the device's net energy gain, for as long as it can last."

Of course, it's not blindly letting the device run until there is a problem, but there are data standards. For example, when the device is running, if the quantum sensing magnetic field monitoring system detects density fluctuations, or the first wall state is not good, it will stop immediately.

"It's almost September. Time passes so damn fast."

Xu Qingzhou sighed inwardly. This might be the world after becoming an adult; in a flash, more than half a year is gone.

Taking a sip of tea, he turned and returned to his seat.

On the table was the plan to upgrade Q1-NTST into a composite tokamak.

Xu Qingzhou is currently working on the magnetic confinement system upgrade.

One of the hard injuries of the spherical tokamak is insufficient toroidal field strength.

"Our superconducting film can raise the magnetic field to above 25T, which can be considered as solving the key magnetic field strength difficulty. That is to say, in this link, the only thing to solve now is the magnetic confinement efficiency problem."

"I have studied a large number of traditional tokamak structures. They all rely on external coils to generate a strong spiral magnetic field, so can we build a composite superconducting magnet system based on the current superconducting magnet system?"

Balancing compactness and magnetic confinement efficiency, nesting toroidal field enhancement coils outside the spherical structure, and compensating for the aspect ratio defect through reverse current.

Xu Qingzhou's initial idea is to build a nested dual magnet layer: the inner layer retains the spherical configuration, and the outer layer superimposes D-shaped cross-section toroidal field coils.