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Introduction to Nuclear Instrumentation
Published in Douglas S. McGregor, J. Kenneth Shultis, Radiation Detection, 2020
Douglas S. McGregor, J. Kenneth Shultis
Safe High Voltage (SHV) connectors are RF connectors designed for use with coaxial cables. Similar in design to a BNC and/or an MHV connector, the male SHV connector has the distinctive feature of a shielded insulator protruding significantly from the connector body (see Fig. 2.10). The protruding insulator on a male SHV connector remedies the safety issues of an MHV connector by preventing contact with the high voltage conductor. Further, the design eliminates the chance of mismatching a high voltage line to a low voltage connector, as can happen by misidentifying an MHV as a BNC. Most SHV connectors are rated for 5000 V and 5 A.
A Multiwire Proportional Chamber for Standardization of Large-Area Sources: Methodology and Challenges for Inhouse Construction
Published in Nuclear Technology, 2023
Ross Longmore, Alessia Ceccatelli, Stuart Green, Tinashe Kanyasa, John Nally, Marta Tempra
In the commissioning phase of the MWPC, a study was performed to estimate and optimize the component of electronic noise due to the specific cable connecting the chamber to the preamplifier. To this end, a temporary electronic chain was assembled, consisting of an integrated electronic module (Canberra® Eagle Plus MCA) and a preamplifier model 142-PC loaned by ORTEC®. The test was intended as a relative study comparing the contributions of different cables to the overall instrument background in a selected region of the spectrum. Such a region was assumed to be stable, as the electronic settings were the same for each test and the MCA unit was periodically checked for stability as part of a preexisting quality control program. The variation of electronic noise of the entire chain was studied for the following connections: a short cable with the SHV connector already available in the laboratory (named SHV 1)a new linear adaptor (no cable) SHV-SHVa new short cable with SHV connectors, specially made by an external company using the shortest possible length of low capacitance cable (RG-59). This type of connector is recommended by ORTEC when connecting a detector to preamplifier 142-PC.[10]