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Created by Main.MirkoPojer on 2007-05-04 - 23:08
Temperatures, humidity and condensation status in Sector 7-8, Fri 4.
| Position | T [°C] | T_meteo [°C] | RH_meteo [%] | T_portable [°C] | RH_portable [%] | Condensation | Dew Point [°C] | Air Speed [m/s] | Time |
|---|---|---|---|---|---|---|---|---|---|
| DFBMC | 20.4 | 48.1 | 0.3-0.8 | 17.30 | |||||
| 20.4 | 48.3 | 20.1 | 51.1 | 19.30 | |||||
| Q6_L8 (120A) | 8.5 | 19.7 | 53.1 | Low | 9.9 | ||||
| Q8_L8 (120A) | 9 | 19.8 | 53.2 | Low | 10.0 | ||||
| Q9_L8 (120A) | 10 | 19.3 | 54.4 | No | 10.0 | 1.1-1.4 | |||
| Q10_L8 (120A) | 9 | 19.0 | 54.2 | Low | 9.5 | 18.50 | |||
| Q11_L8 (60A) | 9 | 19.0 | 54.6 | No | 9.5 | ||||
| Q12_L8 (60A) | 9 | 18.5 | 52 | 18.6 | 54.5 | Yes | 9.2 | 1.0-1.3 | |
| Q13_L8 (60A) | 10 | 18.4 | 55.2 | No | 9.2 | ||||
| Q14_L8 (60A) | 9 | 18.5 | 55.1 | Yes | 9.3 | ||||
| Q15_L8 (60A) | 8.5 | 18.2 | 55.9 | Yes | 9.2 | 19.15 |
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Created by Main.JacekSzkutnik on 2007-05-04 - 18:35
Programme for Monday 07.05.2007
Programme for Monday 07.05.2007| DFBAO | RQ6.L8B1 RQ6.L8B2 |
Switch on the flashing lights around the chimneys of RQ6.L8 circuit in the DFBAO | HCC |
| Unlock and switch on the RPHGB.UA83.RQ6.L8B1 and RPHGB.UA83.RQ6.L8B2 converters. | AB/PO |
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| Sequencer tests on powering procedures for 6kA magnets with 2 PCs ("Q4Q5" procedure) | AB/CO |
| DFBMC | RCBCH5.L8B1 RCBCV5.L8B2 |
Balisage with flashing lights | HCC |
| PC Configuration (test of PC and magnet at minimum current) | AB/PO | ||
| RQ5.L8 | Unlock of the quench heater power supplies (DQHDS) of Q5 and charge. | AT/MEL | |
| PC Configuration | AB/PO | ||
| RCBCH5.L8B1 RCBCV5.L8B2 RQ5.L8 |
PIC2 | HCC AB/CO AB/PO AT/MEL AT/ACR |
|
| P2N | HCC AB/CO AB/PO AT/MEL AT/ACR |
go on with the programme for the 60A converters (orbit correctors) and 120A (Q7 to Q10 correctors) as well as ElQAs in DFBAs X: previous day - X : last day - O : Proposal
| PC_Config | PNO.1 | PNO.2 | PNO.3 | ||
|---|---|---|---|---|---|
| RCBH11_L8B1 | X | X | X | X | |
| RCBV11_L8B2 | X | X | X | X | |
| RCBH12_L8B2 | X | X | X | O | |
| RCBV12_L8B1 | X | X | X | O | |
| RCBH13_L8B1 | X | X | X | O | |
| RCBV13_L8B2 | X | X | X | O | |
| RCBH14_L8B2 | X | X | X | O | |
| RCBV14_L8B1 | X | X | X | O | |
| RCBH15_L8B1 | X | X | O | O | |
| RCBV15_L8B2 | X | X | O | O | |
| RCBH16_L8B2 | X | X | O | O | |
| RCBV16_L8B1 | X | X | O | O | |
| RCBH17_L8B1 | - | PC_Config/crowbar tests to be repeated | |||
| RCBV17_L8B2 | - | PC_Config/crowbar tests to be repeated | |||
| RCBH18_L8B2 | - | PC_Config/crowbar tests to be repeated | |||
| RCBV18_L8B1 | - | PC_Config/crowbar tests to be repeated | |||
| RCBH23_L8B1 | O | ||||
| RCBV23_L8B2 | O | ||||
| RCBH24_L8B2 | O | ||||
| RCBV24_L8B1 | O | ||||
| RCBH25_L8B1 | |||||
| RCBV25_L8B2 | |||||
| RCBH27_L8B1 | |||||
| RCBV27_L8B2 | |||||
| RCBH28_L8B2 | |||||
| RCBV28_L8B1 | |||||
| RCBH29_L8B1 | |||||
| RCBV29_L8B2 | |||||
| RCBH31_L8B1 | |||||
| RCBV31_L8B2 | |||||
| RCBH32_L8B2 | |||||
| RCBV32_L8B1 |
| PC_Config | PIC2 | PNO.1 | PNO.2 | PNO.3 | PNO.4 | ||
|---|---|---|---|---|---|---|---|
| RCBCH9_L8B1 | - | PC_Config/crowbar tests and TFA missing | |||||
| RCBCV9_L8B2 | - | PC_Config/crowbar tests and TFA missing | |||||
| RCBCH10_L8B2 | - | PC_Config/crowbar tests and TFA missing | |||||
| RCBCV10_L8B1 | - | PC_Config/crowbar tests and TFA missing |
| DFBMC | RCBCH5.L8B1 RCBCV5.L8B2 |
Connection of the DC cables to the power converters for these circuits (before 9:00) | AB/PO |
| Verification of the connections at the DFBMC side | AT/MEL | ||
| DFBAO | RQ6.L8B1 RQ6.L8B2 |
Switch on the flashing lights around the chimneys of RQ6.L8 circuit in the DFBAO | HCC |
| Unlock and switch on the RPHGB.UA83.RQ6.L8B1 and RPHGB.UA83.RQ6.L8B2 converters. | AB/PO |
||
| Sequencer tests on powering procedures for 6kA magnets with 2 PCs ("Q4Q5" procedure) | AB/CO |
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Created by Main.MikeKoratzinos on 2007-05-04 - 16:35
RAT meeting 4/5/2007
Current_lead_operating_conditions_20070504.ppt:https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2007x05x04x16x33/Current_lead_operating_conditions_20070504.ppt
Presentation by A. Ballarino - conditions for powering
RAT_20070504.pdf:https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2007x05x04x16x33/RAT_20070504.pdf
Comments:
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Created by Main.JacekSzkutnik on 2007-05-04 - 16:03
Cooldown Sector 78
Despite the long series of faults (network, cooling water, pumping group) experienced at the end of last week, the cryo team managed to bring down the average temperature of the magnets to 3 K during the week-end. The switch over to the new cryoplant took place on Monday but the connection of the new pumping group was delayed until Wednesday morning. Stabilization of temperatures and pressures as well as fine adjustments of the plants took place most of Wednesday until Thursday at 11.30 when the pumping group was set at 15 mbar. Unfortunately, at 11.30 an attempt to restart the UPS system on the surface caused a power cut which stopped all the PLCs. The cryo team is still recovering from that failure and we expect to be at nominal cryogenic condition in the arc tonight Friday May 4th. Following a top management meeting which took place on Monday, a series of measures towards the clearing of the difficulties with the commissioning of the DFBs were taken: two different ways to avoid condensation on the chimneys are now in place: blowers on 6kA leads + heaters on the 120A leads on the DFBMC and dry-air bags around the chimneys of the DFBMA. Although the powering front was very quiet during the week, significant progress was achieved with the preparation of the sequencer for the independently powered quadrupoles and the 120A correctors: we now have the sequencer tuned for the 60 A and 120 A correctors as well as the independently powered quadrupoles and D2. Comments:
Edit | Attach | Topic revision: r1 - 2007-05-02 - JacekSzkutnik
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