- On May 4th the EHDT beam pipe section was installed by Mike Vogel of Beamlines Group
- A new Helicoflex seal was used (provided by Vacuum Group)
- 4" RH Clamp was installed by Isaac Earle.  Clamp became stiff in early travel, was backed off, then fully tighetend down to stop-ring (later learned that early stiffness was likely due to lower part of jaw hitting the outside of the flange and it would have been better to jiggle the clamp rather than back off)
- Pump was started on May 4th end of day by Anthony Ip (turbo pump, no ion pump)

- Vacuum level at low 10E-6 Torr by morning May 5th.  Leak check was performed by Anthony.
- Small leak found at top of 4" seal. No other leaks in system.
- Baseline leak rate ~4*10E-8 Torr*L/s.  Reaching plateau of 1*10E-7Torr*L/s when flooded with helium
- Leak is suspected to be caused by beginning torquign clamp then backing off as mentioned above

- Beamline vented and seal removed (will be reinstalled after water hose swap, before RH test)