強電子線用補償型水熱量計
1964 年 33 巻 5 号 p. 312-316
詳細
1964 年 33 巻 5 号 p. 312-316
A compensation type water flow calorimeter has been constructed to measure the power of intense electron beams. Many kinds of energy loss, such as leakage of bremsstrahlung, thermal radiation loss from the bottom surface of the beam catcher, beam absorption by the window foil and cutting-out of the beam from the aperture due to spreading by the window are discussed. Maximum temperature rise of water is also estimated.
The results obtained with this instrument show a good linearity with electron power in the case of medium beam power over the energy range 1_??_21 MeV and this system seems useful to measure the power of electron beams, which have arbitrary shape of energy spectrum, within an. error 1_??_2%.
There remain some problems in the measurement of high output power owing to the spreading of beam flux by the water cooled window. Pulsed beam has no special effect on these measurements.
