解释一下:To achieve sufficient sensitivity to measure gravitational waves, the detectors include several enhancements to the basic Michelson interferometer. First, each arm contains a resonant optical cavity, formed by its two test mass mirrors, that multiplies the effect of a gravitational wave on the light phase by a factor of 300 [48]. Second, a partially transmissive power-recycling mirror at the input provides additional resonant buildup of the laser light in the interferometer as a whole [49,50]: 20 W of laser input is increased to 700 W incident on the beam splitter, which is further increased to 100 kW circulating in each arm cavity. Third, a partially transmissive signal-recycling mirror at the output optimizes. the gravitational-wave signal extraction by broadening the bandwidth of the arm cavities [51,52]. The interferometer is illuminated with a 1064-nm wavelength Nd:YAG laser, stabilized in amplitude, frequency, and beam geometry [53,54]. The gravitational-wave signal is extracted at the output port using a homodyne readout [55].
时间: 2024-04-26 14:23:10 浏览: 7
这段话讲的是为了测量引力波,激光干涉仪需要进行一系列的增强措施。首先,每个臂都包含一个谐振光学腔,由两个测试质量镜子构成,可将引力波对光相位的影响放大300倍。其次,输入端的部分透射功率增强镜提供了整个干涉仪中激光光强的额外谐振增益:20瓦的激光输入被增加到700瓦,然后进一步增加到每个臂腔中循环的100千瓦。第三,输出端的部分透射信号增强镜通过扩展臂腔的带宽来优化引力波信号的提取。激光干涉仪使用1064纳米波长的Nd:YAG激光,通过幅度、频率和光束几何稳定。引力波信号通过同相干读取在输出端提取。
相关问题
mac Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
This error typically occurs when the Docker daemon is not running or when the user running Docker does not have sufficient permissions. Here are a few steps to troubleshoot this issue:
1. Check if the Docker daemon is running by executing the following command in the terminal:
```
sudo systemctl status docker
```
If it's not running, try starting it with:
```
sudo systemctl start docker
```
2. Ensure that your user account is added to the `docker` group. Run the following command:
```
sudo usermod -aG docker $USER
```
3. Log out and log back in to apply the group membership changes.
4. Verify that the Docker daemon socket file exists by running:
```
ls -l /var/run/docker.sock
```
5. If the socket file does not exist, try restarting Docker with:
```
sudo systemctl restart docker
```
6. If none of the above steps work, you may need to reinstall Docker.
Please note that the exact steps may vary depending on your operating system and Docker installation method.
Linux 查看docker version 显示cannot connect to the docker daemon at Unix :///var /run docker.sock. Is
sue:
This error message usually indicates that you are trying to run the `docker` command without sufficient permissions.
To fix this issue, try running the `docker` command with `sudo` or as the root user. For example:
```
sudo docker version
```
Alternatively, you can add your user account to the `docker` group to grant it permission to access the Docker daemon. To do this, run the following commands:
```
sudo usermod -aG docker <your-user>
sudo systemctl restart docker
```
Replace `<your-user>` with your actual username.
After adding your user to the `docker` group, you may need to log out and log back in for the changes to take effect.
Once you have the proper permissions, you should be able to run the `docker version` command without seeing the "cannot connect to the docker daemon" error.