Application of the Compton backscattering laser light to study the nuclear astrophysics

（1）时间投影室的构造，时间投影室最近被构造了。自从德国汽油的目标成本很高，而且从德国光电集成发射质子的能量也很低，达到了短的停止范围，我们必须开发出腔室，可以在气体目标的压力较低的情况下操作。因此，腔室应该在极高的真空中蒸发到极低的泄漏率。2）时间投影室的性能：时间投影室的性能是通过使用α-射线源进行研究的; 2.1）对受电荷粒子的检测效率;在腔室的后续条件下，效率超过99.5%。例如，阳极线和野外线的电压为+1500 V和-2000 V，相对于700 Torr.2.2）的气体漂移速度;平均速度约为0.55（3）厘米/微秒，取决于电场的强度。2.3）的能量分辨率;该决议为5.8%，因为能量损失了67千伏，脉冲高度的线性与能量是很好的。时间分辨率为32纳米秒，与0.18毫米3的Z方向的位置分辨率相对应。液化天然气循环系统的构造：按顺序操作时间投射室·实际上，它应该在实验条件下不受污染气体的影响，通过系统的泄漏或系统的排出气体。因此，我们用天然气净化设备建造了一个封闭的气体循环系统，并通过这种方式，我们可以为室内提供净化的气体。当然，这个房间可以用来做一个长期的实验，而没有任何问题。数据采集系统的建设：数据采集方案已经制定。

1) Construction of the time projection chamber.The time projection chamber was newly constructed. Since the deuteron gas target costs very much, and also the energy of the proton emitted from the deuteron photodisintegration is very low leading to the short stopping range, we had to develop the chamber, which can be operated at low pressure of the gas target. Therefore, the chamber should be evacuated up to the extremely high vacuum with very few leakage.2) Performance of the time projection chamber :the performance of the time projection chamber was studied by using the alpha-ray source as discussed below.2.1) Detection efficiency of the charged particle ;The efficiency was more than 99.5% under the following conditions of the chambar. Namely, the high voltages of the anode wire and field wire were +1500V and -2000V,respectively at the gas presure of 700 torr.2.2) Drift velocity ;The average velocity was about 0.55(3)cm/micro seconds, and it depends on the strength of the electric field.2.3) Energy resolution ;The resolution was 5.8% for the signal of the energy loss of 67 keV,and the linearity of the pulse height vs. the energy was quite good.2.4) Time resolution ;The time resolution was 32 nano-seconds, which corresponds to the position resolution of the z-direction of 0.18 mm.3). Construction of the purified gas circulating system :In order to operate the time projection chamber・properly it should be used in the experimental conditions free from the impurity gas, caused either by the leakage of the system or the out gas of the system. Therefore, we constructed the closed gas circulating system with the gas purified equipment, and thereby we can provide the purified gas to the chamber. Consequently, the chamber can be used for a long term experiment without having any problem.4). Construction of the data taking system :The data taking program was made.