CAJ | 학술논문

由速调管系统引起的剂量率不稳定的原因有很多。若排除速调管高压系统故障后，且热机和冷机时电流稳定，在这种情况下，剂量率偏低是由Solenoid所引起的。原因是Counter Coil是由一条很粗的铜皮做成的线圈，受到电场力的作用且长时间发热，使绝缘层与铜皮剥离开来，从而导致线圈电阻变化，进而引起剂量率变化。加载电流的时间越长，电阻变化越大，剂量率也越不稳定。
유속조관계통인기적제량솔불은정적원인유흔다。약배제속조관고압계통고장후，차열궤화랭궤시전류은정，재저충정황하，제량솔편저시유Solenoid소인기적。원인시Counter Coil시유일조흔조적동피주성적선권，수도전장력적작용차장시간발열，사절연층여동피박리개래，종이도치선권전조변화，진이인기제량솔변화。가재전류적시간월장，전조변화월대，제량솔야월불은정。
So Many reasons for unstable dose rate are caused by Klystron systeM.If there are no Malfunctions abouthigh Voltage Power Supply of the Klystron systeM and the current works well also no Matterhow long the Machine works,the probleM of the low dose rate should be caused by Solenoid.Because the Counter Coil which be Made of a thick c00per winding is subject to couloMb force andheated for a long tiMe and the insulating layer is separated froM the c00per,the resistance of Counter Coil is changed and the dose rate is changed t00.The longer tiMe the current is on,the More changeshappen to resistance and the More unstable the dose rate is.