Injection test 3 - progress

 

21:10 Finish in S23 etc.  TI8 continues a while - a  few shots at higher intensity on TI2 TED for Alice.

21:00 Frantic 2 and a half hours of measurements. Interleaved injection - TI8 - TI2, S23, 34, 45

18:30 Beam to left of 5. Will take a few shots. Trajectory correction converges nicely.

17:40 Quench.

17:15 Beam to 3 - quenchino tests in progress

17:05 Beam on to TDI - TDI out

15:50 Access finished. Ring closed.

15:30 Cycling 23, starting soft start of kickers, Greg, Dave and Isabelle at point 4.

 

Plan for day

11:45 start pre-cycle 23

12:00 start inj kickers soft start

Access 5 to condemn D1/D2

14:00 access 4 to condemn dog leg magnets,

recover access and beam permits

16:00 beam to 23 - few shots

16:30 quenchino

cycle 23 - few shots

16:00 cycle 23/34/45 and prepare for injection 23/34/45 to tertiary collimators left of 5

18:00 - few shots into 23/34/45

21:00 RP survey left of 5 - beam off for the night

LHC to bed over night - no beam

 

 

Cryo in point 8 won't be back before Monday morning.

Access at 11:00 for vacuum point 5.

Sunday morning - program overnight as planned.

Overnight - polarity tests via kick-response - continued studies in TI8 with alternate injections into point 2 and point 8. 

23:30 Beam back - Alice have been waiting patiently

Saturday evening: no beam in SPS - compensator problem.

19:30 A learning experience. Unable to re-establish beam permit for beam one, because beam dump system needs S78 up. Access in point 6 to reconfigure.

78 up to around 4.5 K, will take at least most of tomorrow to recover.

18:00 Beam down TI2 - shots on to TED.

15:45 LHC closed. Taking beam down TI2 and then TI8.

12:30 Patrol lost in point 8 - recovering.

Will switch to TI2 this afternoon and take beam through Alice around 18:00. Will also take some beam onto TI8 TED for LHCb.

09:00 power outage (3.6 KV to main cryo plant - point 8) - cryo hit S78 and S81 - recovery sometime Sunday - Access given in 8 and 6

03:50 beam back - beam to beam dump channel point 6 - image from first shot - inject and dump commissioned - big optics error point 7 (problem found).

01:30 Problems with access system giving access to TI8.

00:50 Unable to retract TED (mobile dump block at the end of the TI8 transfer line). Access required.

00:10 Access fixed. Preparing to take beam into LHC.

21:00 Access door has two sensors inoperative. Repair will take 3 to 4 hours. Beam studies in TI8 continue.

19:30 Beam down TI8 on to TED. Waiting on CMS - problem with access door - experts working. LHC cycled and set to injection level.

17:00 Finishing patrols, closing ring.