[Kimura and Yasui]

 On March 25, we switched  form TMP to the Ion pump of the #30 vacuum pump unit connected to the EYV .

After the activation of the #30 Ion pump, we turned off the #30 TMP, dry pump and an air conditioner.

Also, we switched  form TMP to the Ion pump of the #35 vacuum pump unit connected to the beam duct in the 1st floor of Y-end mirror room.

We turned off the #38 TMP and #35 TMP with dry pumps.