Performance of the cost-effective Planacon ® MCP-PMTs in strong magnetic fields
Performance of the cost-effective Planacon ® MCP-PMTs in strong magnetic fields
复制标题
DOI：
10.1016/j.nima.2020.164591
复制
发表时间：
2020-12
影响因子：
1.4
通讯作者：
Y. Melikyan;I. Bearden;E. Garcia-Solis;V. Kaplin;T. Karavicheva;J. Klay;T. Marszał;I. Morozov;D. Serebryakov;M. Slupecki;W. Trzaska
中科院分区：
文献类型：
--
作者：
Y. Melikyan;I. Bearden;E. Garcia-Solis;V. Kaplin;T. Karavicheva;J. Klay;T. Marszał;I. Morozov;D. Serebryakov;M. Slupecki;W. Trzaska
我们介绍了具有成本效益的Planacon MCP-PMT的行为与25 μ m的孔径在轴向磁场高达0.5 T的存在。在一批62个同类型器件中，选择了两个MCP-PMT，测量了它们在不同磁场下的增益变化。这两个在其他方面相同的器件满足了选择标准，需要最低（1.15 kV）和最高（1.4 kV）偏置电压值之一来实现给定的增益。尽管偏置电压存在显著差异，但两种MCP-PMT对强磁场的耐受性几乎相同。这阐明了B场对MCP-PMT增益的影响机制，强调了MCP发射涂层的内在参数而不是外部参数（如总偏置电压）的重要性。通过评估增益和定时参数对磁场强度的依赖性，我们确认了这种MCP-光电倍增管在强磁场中的可操作性，尽管给定增益所需的相对较大的孔径和低偏置电压。
We present the behavior of the cost-effective Planacon MCP-PMTs with 25 μ m pore diameter in the presence of axial magnetic fields up to 0.5 T. Having a batch of 62 devices of the same type, two MCP-PMTs were selected and their gain variation measured in different magnetic fields. These two otherwise identical devices satisfied the selection criteria by requiring the lowest (1.15 kV) and one of the highest (1.4 kV) bias voltage values to achieve a given gain. Both MCP-PMTs have a nearly identical tolerance of the strong magnetic field despite the significant difference in the bias voltage. This clarifies the mechanism of the B-field influence on the MCP-PMT gain, emphasizing the importance of the intrinsic parameters of the MCP emissive coating rather than external parameters, such as the total bias voltage. By evaluating the dependence of both gain and timing parameters on the magnetic field strength, we confirm the operability of such MCP-PMTs in strong magnetic fields in spite of the relatively large pore diameter and low bias voltage required for a given gain.