Created by Main.MirkoPojer on 2007-06-29 - 20:33

Powering Tests Sector 7-8 _ 29/06/2007

D2-Q4 study in the afternoon

The following cycle has been executed on D2-Q4, to study stability at minimum liquid helium level in DFBMA:

• with nominal liquil helium level inside the DFBMA, RD2.L8 and RQ4.L8B1/B2 to I_min_op
• lower liquid helium level to 31%
• ramp of RD2.L8 to 6kA with 18 A/s ramp rate; once at nominal, ramp of RQ4.L8B1/B2 to 3610 A with 10A/s ramp rate
• plateau of 30 min, then ramp RQ4.L8B1/B2 to I_min_op (RD2.L8 always at nominal)
• wait 2 min and ramp RQ4.L8B2 to 3610A at 10 A/s and RQ4.L8B1 to 1900A at 10A/s
• plateau of 20 min
• power permit removed on all PCs and SPA initiated withou quench.

Test result: successful!

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Created by Main.AntonioVergara on 2007-06-29 - 17:16

Powering Tests Sector 7-8 - 29.06.2007

PlanningW27.xls:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2007x06x29x16x22/PlanningW27.xls

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Created by Main.MatteoSolfaroli on 2007-06-29 - 16:33

Activities foreseen in sector 45 from Monday 2nd July up to the cooldown

Activities in sector 45 from Monday 2nd July

• CRYO
  • Purging on Friday 29th evening and all the week end long;
  • Refilling on Monday 2nd July;
• ElQA-TP4B and Monitoring installation
  • On Tuesday 3th July, once 6Bar conditions are reached, ElQA will be repeated (only on RB) maybe from 8am to 1pm. RESTRICTED ACCESS.
• CRYO-instrumentation
  • Coherence test of all the valves in ARC and LSS (Thursday 28th and Friday 29th);
  • Commissioning;
  • Initialization of the CV910 valves on Tuesday 26th and Wednesday 27th;
• TS/EL intervention
  • Changing of the connectors of a BPM (LSS4R);
  • Connection check of the instrumentation cables of BCT;
• TIM camera
  • General check on Monday 2nd July;
  • Run from P4 to P5, during the Cryo Patrouille the morning of the start of the cool-down;
• Safety Inspection
  • Monday 2nd July at 2pm;
• AT/ACR Patrouille
  • A Patrouille will be carried out on Wednesday 4th July just before the cooldown.
• AT/VAC
  • Short access to LSS4R and LSS5L on Monday 2nd July.
• AB/BI
  • LSS4R short intervention on the BI (capeau).

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