Design Review of  CPA and HV Feed-Through for SBND

    June 6, 2016

 Charge

The Committee is to conduct a technical review of  the Cathode Plane Assemblies (CPA) and High Voltage (HV) feed-through  subsystems to assess their readiness for prototyping tests and fabrications.  Nominal SBND operation requires CPA to hold 100KV for providing drift field of 500V/cm while keeping electrical field everywhere below 30KV/cm.  The design voltage is 150KV for high voltage feed-through and CPA components for safety overhead.  The review team is asked to examine the designs and address the following questions:

• Are the technical specifications of the subsystems adequately defined?  Do the key design parameter follow from them?    
• Are engineering  documentations including structural and electrostatic FEA analysis sufficient enough to support the fabrication, installation and operation of the subsystems?
• Are planned prototyping steps and QA/QC tests adequate to address any potential design issue especially on the electrostatic calculation?
• Are the designs presented sufficient enough to support the start of prototyping testings and fabrications?
  

The committee should present its findings, comments, and recommendations as well as answers to the above questions in a written report within 2 weeks of the actual review.