Recent Log Entries

VIP2L257 Update

Log Number: 3494782Logbook(s): Entry Makers: hesseBody: 

Vacuum expert on site. Replaced supply. Pump overload still present. Requested that the cavity be left off for further investigation on Monday.

2L16:1 affects 2L17 BLM but not 2L27

Log Number: 3494780Logbook(s): Entry Makers: mmerzBody: 

While the whole zone tripping off lowers BLM 2L17 dramatically, lowering :1 to 2.5 has only a minor impact on BLM activity. Effect at other BLMs between zones 15-27 was fadingly small. No impact was seen at 2L27.

iocsoftrfslacres2 restored

Log Number: 3494777Logbook(s): Tags: Body: myRestore 2.12 Target restore date was 2017-11-19 00:13:05 The output from the myRestore execution was as follows: iocsoftrfslacres2 SLAC_scllrf_RES 29(29) restored system 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -s -i iocsoftrfslacres2 (success)

iocsoftrfslacint2 restored

Log Number: 3494779Logbook(s): Tags: Body: myRestore 2.12 Target restore date was 2017-11-19 00:12:55 The output from the myRestore execution was as follows: iocsoftrfslacint2 SLAC_scllrf_INT 71(71) restored system 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -s -i iocsoftrfslacint2 (success)

iocsoftrfslacint1 restored

Log Number: 3494776Logbook(s): Tags: Body: myRestore 2.12 Target restore date was 2017-11-19 00:12:53 The output from the myRestore execution was as follows: iocsoftrfslacint1 SLAC_scllrf_INT 71(71) restored system 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -s -i iocsoftrfslacint1 (success)

ioccf02rffcc1 restored

Log Number: 3494768Logbook(s): Tags: Body: myRestore 2.12 Target restore date was 2017-11-18 23:16:17 The output from the myRestore execution was as follows: ioccf02rffcc1 Rf12Fcc_cf Pause: 60 seconds Execute: /usr/srfuser/opshome/burt/REBOOT/Rf12Fcc/DLOAD_ICAL.csh ioccf02rffcc1 (success) Srf1300_ecal_rffcc 19(19) restored Srf1300_exp_rffcc 33(33) restored c100_rffcc 30(30) restored Execute: /usr/srfuser/opshome/burt/REBOOT/Rf12Fcc/GGTmyRestore.csh ioccf02rffcc1 (success) Execute: caput RA21TRGD8 1 (success) system 2(2) restored Execute: /usr/csite/certified/

ioccf02rffcc5 restored

Log Number: 3494772Logbook(s): Tags: Body: myRestore 2.12 Target restore date was 2017-11-18 23:16:17 The output from the myRestore execution was as follows: ioccf02rffcc5 Rf12Fcc_cf Pause: 60 seconds Execute: /usr/srfuser/opshome/burt/REBOOT/Rf12Fcc/DLOAD_ICAL.csh ioccf02rffcc5 (success) Srf1300_ecal_rffcc 19(19) restored Srf1300_exp_rffcc 33(33) restored c100_rffcc 30(30) restored Execute: /usr/srfuser/opshome/burt/REBOOT/Rf12Fcc/GGTmyRestore.csh ioccf02rffcc5 (success) Execute: caput RA25TRGD8 1 (success) system 2(2) restored Execute: /usr/csite/certified/

2L26 Update

Log Number: 3494767Logbook(s): Entry Makers: hesseBody: 

Running much better now that the gradients have been lowered.

Figure 1: Graphs of LL (blue), module pressure (green), south return line pressure (red), and 2L26 GMES (brown) since 5am this morning. Figure 5 shows a longer time scale. LL fluctuations and increased pressure seem to be the main culprits for the instability.

Figure 2: Shows the trips since 5:30am on zone 2L26.

Figure 3: Current Cold Box Conditions

Figure 4: Current 2L26 Conditions

Correlation between 2L16:1 GMES & 2L17 Vacuum

Log Number: 3494763Logbook(s): Entry Makers: mmerzBody: 

it was noticed that the 2L17 vacuum degraded as 2L16 ramped up. At first :6 was suspected but no coorelation was found. :1 was tried and indications were strong. GSET lowered to 10 on advice from PD.

2L26 ODVHs Decreased

Log Number: 3494762Logbook(s): Entry Makers: hesseBody: 

2L26 was dropping with some regularity at its current GSET values.

Thanks Jay

Pages