Date: October 25, 1996
From: Jock Fugitt
Subject: 600 KV Power Supply In-house PDR.
Today we held an informal review of the electron gun high voltage power supply systems.
Present were: S. Benson, G. Biallas, C. Bohn, G. Neil, J. Susta,
and J. Fugitt
The issues addressed were:
HV Tank shape: It was agreed that the "coffin" style
of high voltage tank would be desirable. However it may not be
the most cost effective configuration. J. Susta will discuss
cost/shape considerations with local vendors, and then prepare
paperwork for a budgetary quote on one or two configurations.
Material is to be mild steel, painted inside with gloss white,
and outside with "rustolium" red.
Tank location: The tank will be located in the pit, with a right
angle bend in the high voltage transmission line.
Use of HV insulator (Gas Barrier): No high voltage barrier insulator will be used at this time due to risk and time factors.
Operating pressure: The operating pressure will be one atmosphere
over pressure (15 PSIG) Max. Tank will Not be built to
pressure vessel code.
Use of gas recovery: No gas recovery system will be installed
at this time. We will use modest gradients which will allow us
to use only about 20-30% SF6 gas.
DC Design gradients: The design gradients shall be conservative
with 10 MV/Meter being the upper limit. The uniform field regions
would be operating at between 5 and 6.5 MV/M when the power supply
is at 600KV.