Friday 25 bunch fill dumped just before 08.00 (BLM in 5) Morning and early afternoon Multibunch injection studies (Beam 1) Multibunch scheme operational by 15.00 Late afternoon Fill for physics with 25 on 25 from 15.00 Lost after squeeze around 17.00 – procedural problem Try again – settings management issues end of squeeze – fixed Collisions ~ 23.00 – some losses at start Issues with lumi scans – fixed Stable physics through the night Weekend Physics running with 25 on 25 2/25/2019 LHC status

Friday Note that we now have 2 TCDIH in TI2 with +/-5 sigma gaps, instead of nominal +/-4.5 sig. ******************************************** *** OK for MAXIMUM 5e11 p+ per injection *** ******************************************** until full verification of protection settings is made. 2/25/2019 LHC status

Fill 1251 In the attached plots, the following color coding is used: - black for witness bunches (zero collisions); - red for bunches colliding in IP 1 5 and 2 (3 collisions); - blue for bunches colliding in IP 1 5 and 8 (3 collisions); - green for bunches colliding in IP 2 and 8 (2 collisions). 2/25/2019 LHC status

Fill 1253 In the attached plots, the following color coding is used: - black for witness bunches (zero collisions); - red for bunches colliding in IP 1 5 and 2 (3 collisions); - blue for bunches colliding in IP 1 5 and 8 (3 collisions); - green for bunches colliding in IP 2 and 8 (2 collisions). 2/25/2019 LHC status

Interventions needed Magnetic probes in the machine for the studies related to the hump - access would be required in point 5 (GA, LW) 2 hours in the shadow 2/25/2019 LHC status