Set-Up Instructions for First Collisions 450 GeV

Included Subsystems

• Subsystems In: ALL but ALFA MMEGA
• Subsystems Out: ALFA and MMEGA

Useful Information

• The TDAQ instructions are in the DAQWhiteBoard
• Trigger prescales are on the TriggerWhiteBoard

Filling scheme

• We will run the first part of the test with flat bunch groups. Later we will load the following bunch scheme

• For the proposed scheme is Single_2b_1_1_1_pilot.
• As usual you can find it in the scheme browser: http://abwww.cern.ch/ap/dist/lhc/lhc-app-injectionschemeviewer/PRO/lhc-app-injectionschemeviewer-3t.jnlpx?lsa.server=gpn.

CTP

• Call CTP expert on-call and have them set:
• Simple Dead Time 4
• complex 15/370 (L1calo), 42/381 (TRT), 8/350 (LAr), 3/400 (PIX/IBL)

Run Control

• beam type: protons
• data tag: data15_comm
• recording: enabled
• lumiblock length: standard

Trigger

LUMINOSITY

• The preferred algorithm is MBTS_EventAND
• It needs ATLAS partition to be RUNNING to give meaningful luminosity values
• It will become ATLAS_PREFERRED for the instantaneous luminosity tonight (will thus be forwarded to LHC Page 1)
• It is sent to LHC via dip folder:
• dip/ATLAS/LHC/LumiScan0 (set to preferred)
• The backup algorithm is BCMTOR, sent in dip folder:
• dip/ATLAS/LHC/LumiScan6
• It does not need ATLAS to be RUNNING
• IntTime needs to be changed to 1or 2 seconds (7 seconds right now). It will be changed at the same time we switch the ATLAS_PREFERRED tonight.

Event Display

• • connect to server
  • MinBias

Changes done to flip to Cosmics which need to be reverted tomorrow.

• Complex deadtime Bucket 3 : 2/400 needs to go back to 3/400
• simple deadtime 21 on request by CTP to have larger readout window.
• remember to have beam spot, and OLC to HLT disabled
• remember to have ROI L1 TOPO disabled
• Could possibly enable muon triggers in all sectors

-- Main.apolini - 2015-05-04