HV Procedures for Different Beam Conditions o Beam
HV Procedures for Different Beam Conditions o Beam Splash n o ALL HV on Standby – before, during, after Single Beam n n Start at all HV on Standby Follow “CSC HV Ramp Up Procedure” o o Collisions n n o Steps 3 4 on following slides Start at all HV on Standby Follow “CSC HV Ramp Up Procedure” No Beam n n 04 -Nov-2009 Default to ON for cosmic ray running May be at ? ? STANDBY for calibration runs DCS HV for BEAM Instructions 1
CSC HV Inner / Outer Chambers 4 Stations 3 2 ¼ view (not to scale) 1 Outer Chambers = ME 1/3, ME[1 -4]/2 x Inner Chambers = ME[1 -4]/1 04 -Nov-2009 IP 1) Inner Chambers 1) All ME 1/x 2) Outer Chambers 1) All ME 2/x 2) All ME 3/x 1) ME 1/1 1) ON = 2900 V 2) Standby = 2600 V 2) All Others 1) ON = 3600 V 2) Standby = 3000 V Time from Standby ON = 3 minutes Time from ON Standby = ? ? minutes DCS HV for BEAM Instructions 2
“CSC HV Ramp-Up Procedure” for single or colliding beams: From Standby ON 4 Stations 3 2 ¼ view (not to scale) 1 Outer Chambers = ME 1/3, ME[1 -4]/2 x 1) Inner and Outer Chambers = Standby 2) Beam in ring 3) Evaluate LHC Beam Radiation Monitor (BRM) 4) Outer Chambers = ON 5) Evaluate… • Outer Chambers currents and rates • HF status • BRM 6) If step 5) deemed OK, Inner Chambers = ON IP Inner Chambers = ME[1 -4]/1 Time from Standby ON = 3 minutes 04 -Nov-2009 DCS HV for BEAM Instructions 3
To contrlol HV Start From Top Level of CSC DCS UI o o Start by; Double left click on CSC_HV 04 -Nov-2009 DCS HV for BEAM Instructions 4
HV Primaries Control Panel will pop up o o o HV Primary Value Setting and ON/OFF are separate for ME 1/1 (Dubna) and all other chambers (UFHV) UFHV is further split into INNER and OUTER No explicit STANDBY setting is available 04 -Nov-2009 DCS HV for BEAM Instructions 5
The 5 Steps of HV Control 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON" 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 “CSC HV Ramp Up Procedure” Steps 3 <-> 4 <-> 5 DCS HV for BEAM Instructions 6
BEGIN == OFF -> STANDBY -> OUTER_ON -> OFF 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON“ 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 Step 1 Standard HV turn on from ‘cold’ start DCS HV for BEAM Instructions 7
OFF -> STANDBY -> OUTER_ON -> OFF 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2600 3000 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON". . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON“ 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 Step 2 Continuation of Standard HV turn on from ‘cold’ start DCS HV for BEAM Instructions 8
OFF -> STANDBY -> OUTER_ON -> OFF 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON". . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 2600 3000 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON“ 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 1 st Step of “CSC HV Ramp Up Procedure” Steps 3 <-> 4 DCS HV for BEAM Instructions 9
OFF -> STANDBY -> OUTER_ON -> OFF 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2900 3600 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON" 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 2 nd Step of “CSC HV Ramp Up Procedure” Steps 3 <-> 4 DCS HV for BEAM Instructions 10
OFF -> STANDBY -> OUTER_ON -> OFF 1) BEGIN state: HV OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 2) OFF -> STANDBY: . . . from HV expert page: ME 11 HV (DUBNA) = 2600 <CR>, "ON". . . from HV expert page: ALL Chambers VSET = 3000 <CR>, "ON" 3) STANDBY -> OUTER_ON. . . from HV expert page: Outer Chambers VSET = 3600 <CR>, "ON“ 4) OUTER_ON -> ON. . . from HV expert page: ALL Chambers VSET = 3600 <CR>, "ON“. . . from HV expert page: ME 11 HV (DUBNA) = 2900 <CR>, "ON“ Procedure for controlled complete shut down 5) ON -> OFF. . . from HV expert page: "INIT HV SCAN" (wait for the progress bar) 04 -Nov-2009 DCS HV for BEAM Instructions 11
Backup 04 -Nov-2009 DCS HV for BEAM Instructions 12
HV Primaries Control Panel o Ignore these buttons and this area o HV ON/OFF Control for Inner HV ON/OFF Control for Outer o 04 -Nov-2009 To change >> left click on ON or OFF box DCS HV for BEAM Instructions 13
HV Primary Value Setting o o HV Primary Value Settings for Inner HV Primary Value Setting for Outer 04 -Nov-2009 To change >> highlight existing value, type in new value, <cr> The <cr> with curser in the box in necessary to set value DCS HV for BEAM Instructions 14
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