Electron-multiplier tube performance testing method and device under vacuum condition

• Main Authors: YU MIN, CHANG JIN, TANG HESEN, MA TAO, CAI MINGSHENG, MA JIANPING, GONG YIZHONG, ZHANG RENJIAN, HU YIMING, WANG NANSEN, ZHANG NAN
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2011
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a method of photomultiplier aptitude testing under the vacuum condition: making the circle tubular vacuum tank to connect vacuum system well; putting the CsI crystal in the vacuum tank; putting the photomultiplier on the CsI crystal end surface and coupling well; making the photomultiplier to connect power supply system well; evacuation after covered the sealing coping well; adding the electricity when the vacuum degree achieved the request; placing the Cs isotope radioactive source in the vacuum tank base; after the detector adds the electricity and works, pre-amplifier, the main amplifier enlarges the small pulse signal which outputs by the detector and transmits to the multichannel analyzer, obtains the power spectrum curve. The main body of the invention equipment is a circle tubular vacuum tank, there is the voltage transferring part which the electricity tests needs and the bleeder valve above the lap, a valve in the side face connects the vacuum system. The existing technology