The high voltage was sparking several times during the night. It may be correlated with the cycling of the cooling water temperature and conductance.

vacuum levels at 11:00

IG1 7.5e-7 T

IG2 3.9e-6 T

IG1s 2.0 e-6 T

heaters have been ramped up to TGH 580 A, TBHT 250 A,

anode 100 V 5.3 mA, coil 50 A Faraday cup 50 nA bias 20 kV EL 6 kV

vacuum

IG1 7.9e-7

IG2 4.5e-6

IG1s 2.2e-6