December 8-14, 1997

December 8 , 9 , 10 , 11 , 12 , 13 , 14

December 8

• Machine study.
• Study on the low-emittance optics (105 degrees/cell) was carried out.

Beam current (blue) and lifetime (red) today.

December 9

• User run.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  10:00 AM	352.1 mA	889 minutes	313 A*minutes	0.250 nTorr	419.5 A*hours

Beam current (blue) and lifetime (red) today.

December 10

• User run.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  10:00 AM	385.5 mA	866 minutes	334 A*minutes	0.237 nTorr	426.1 A*hours

Beam current (blue) and lifetime (red) today.

December 11

• User run.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  10:00 AM	380.5 mA	917 minutes	349 A*minutes	0.231 nTorr	433.1 A*hours

Beam current (blue) and lifetime (red) today.

December 12

• User run.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  10:00 AM	380.7 mA	963 minutes	367 A*minutes	0.230 nTorr	440.0 A*hours

Beam current (blue) and lifetime (red) today.

December 13

• User run.
• We had a beam dump just after the injection in the morning. We guessed that an rf phase was slightly jumped (?) during changing the rf frequency. The beam was injected again.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  11:00 AM	378.1 mA	958 minutes	362 A*minutes	0.230 nTorr	447.2 A*hours

Beam current (blue) and lifetime (red) today.

December 14

• User run.
• We had a beam dump again after the injection in the morning (due to an rf phase trip ?). We re-injected the beam.
• Operation status in this morning:
  

  Time	Beam current	Beam lifetime	I*tau	Average pressure	Integrated current
  10:00 AM	393.9 mA	1013 minutes	399 A*minutes	0.228 nTorr	453.9 A*hours

Beam current (blue) and lifetime (red) today.