E-mail from Dave MacNair concerning bench measurements made on SCOR-6 type corrector power supplies, as presently used in sectors 21-30:

1
E-mail from Dave MacNair concerning bench
measurements made on SCOR-6 type corrector power
supplies, as presently used in sectors 21-30
2
(No Transcript)
3
(No Transcript)
4
(No Transcript)
5
Summary

• With the standard load, at a 3-ampere setting
  (half of maximum output), and for frequencies, f,
  between 240 Hz gt f gt 0.5 Hz, the SCOR-6 corrector
  power supplies regulate at an rms of 310-5 with
  respect to their full 6-ampere output scale.
• A significant component of this is a 60-Hz
  ripple.
• This regulation improves at a zero-current
  setting to 0.410-5 and becomes worse at the full
  6-ampere setting, to 410-5.
• This is 10-times better than was originally
  expected.
• It means that these correctors can be used for
  the LCLS, probably in sectors 22-30, but must be
  upgraded in sector 21, and possibly sector 22
  (work in progress).