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  RH-ISAC, Page 128 of 141  Not logged in ELOG logo
ID Date Author Category Type Module Target/Number Subject
  284   Wednesday, April 03, 2013, 12:26 David WangITEMaintenanceTM4Sic LIS/RFQLeak check on ITE TM4.

TM 4 had been leak check in ITE due to   relatively high PNG1 and IG1 readings.All TM4 primary and secondary  vessel air to vacuum seals had been leak checked. All water lines in TM4 had been helium pressured . There is no leak had been found so far.

  283   Wednesday, April 03, 2013, 10:59 Travis CaveSouth Hot-CellStandard OperationTM1no targetmodule move

TM#1 has been moved from the south west silo to the south hot cell, move went well.

  282   Tuesday, April 02, 2013, 10:07 chad fisherSouth Hot-CellStandard OperationTM1Ta#39Ta#39 inserted into hot cell

Ta#39 has been inserted into the hot cell in preparation for TM1 target change.

  281   Wednesday, March 27, 2013, 12:08 David WangSouth Hot-CellStandard OperationTM4Sic LIS-RFQTM4 heat shield circuit leak check with SiC LIS-RFQ target

Chad and I did the TM4 heat shield leak check yesterday at SHC. The leak detector was pumped to 4.6 xE-9atm.cc/sec, and 0.0xE-4 torr after 1.5 hours pumping. Chad sprayed helium twice on both VCR fittings. There is no response had been found during each 45 seconds waiting time. Since the module moved to ITE directly,we didnt have helium pressure test this time. I  would say thee heat shield circuit is leak tight. so far.

  280   Wednesday, March 27, 2013, 11:49 David WangITEStandard OperationTM4Sic LIS-RFQ Connected TM4 in ITE

TM4 has been reconnected to ITE after the module moving. The roughing is started . The water will be supplied to ITE after  testing  the water  pumps . The water interlock check will be done on next week also.

  279   Wednesday, March 27, 2013, 10:44 Travis CaveITEStandard OperationTM4SiC#28 (RFQ Target)module move

TM#4 with SiC#28 has been moved from the south hot cell to the east target station move went well.

  278   Tuesday, March 26, 2013, 14:17 Travis CaveSouth Hot-CellStandard OperationTM4SiC#28 (RFQ Target)Electrical check

Electrical check of TM#4 SiC#28 (RFQ Target) has been completed. It passed the standard electrical checks for the target part, but the electrical check for the RFQ part is suspect, see the attached PDF for the details.

Attachment 1: TM4_SiC28_RFQ_SHC_ELEC_CHK.PDF
TM4_SiC28_RFQ_SHC_ELEC_CHK.PDF TM4_SiC28_RFQ_SHC_ELEC_CHK.PDF
  277   Monday, March 25, 2013, 14:19 Travis CaveConditioning StationStandard OperationTM4CS Test Target #1module move

TM#4 with the CS Test target has been moved from the conditioning station to the south hot cell. Move went well.

  276   Monday, March 25, 2013, 10:59 Bevan MossConditioning StationDevelopmentTM4FEBIAD HP with Dummy TargetCommissioning TCS - Part 2 Completed

Aurelia Laxdal wrote:

After few hickups the TCS was successfuly commissioned.

In the morning, in the middle of the heaters conditioning: 360A/250A for the TGHT/TBHT, the target heater PS tripped and it didn't recover immediately.  I cannot tell if the card is still OK. Before this even, there were few bias current sparks created when the ionized tube was raised above 250A; this also tripped the Einzel lens. Re-started the Heaters, and did the conditioning with the rest (HV, Optics) Off. After the heaters were at nominal values, raised the rest: HV to 30kV and the Optics. And everything held fine. The current on the FC was 3micro-Amperes. The water temperature levels stayed below 25 deg Celsius.

The problems that need to be fixed:

1. The biggest problem was created by the target power supply: the new card is not calibrated, the voltage is not regulating, but the main problem is the grounding of the output of power supply. Friedhelm measured 0.2V across the return and the cage (200mili-ohms resistance) .  This was probably overlooked.

2. The Auto-ramping routine didn't work. Controls would need to fix this.

3. The RGA didn't want to connect from the account Don created for me. So, we have only a RGA scan taken on Friday by Don, when the target was cold.

 

 Response to item 1. 

This morning I investigated the output of the TGHT power supply. The negative output of the power supply is tied to common as per ISK4574D Rev 7 (attached) and the released drawing IRH1511 Rev A (PDF attached but officially located in the SW vault). If this is not the intent of the IRH1511 should be released to Rev C reflecting the desired configuration. 

 In regards to the calibration of the card I will inform the PS group. 

Attachment 1: IRH1511.pdf
IRH1511.pdf
Attachment 2: ISK4574D-rev7.pdf
ISK4574D-rev7.pdf
  275   Monday, March 25, 2013, 09:35 Bevan MossConditioning StationStandard OperationTM4CS Test Target #1Cooling Package and Vacuum Stopped

 The cooling package and vacuum was stopped today at 9:26 so the module can be move.

  274   Saturday, March 23, 2013, 18:14 Aurelia LaxdalConditioning StationDevelopmentTM4FEBIAD HP with Dummy TargetCommissioning TCS - Part 2 Completed

After few hickups the TCS was successfuly commissioned.

In the morning, in the middle of the heaters conditioning: 360A/250A for the TGHT/TBHT, the target heater PS tripped and it didn't recover immediately.  I cannot tell if the card is still OK. Before this even, there were few bias current sparks created when the ionized tube was raised above 250A; this also tripped the Einzel lens. Re-started the Heaters, and did the conditioning with the rest (HV, Optics) Off. After the heaters were at nominal values, raised the rest: HV to 30kV and the Optics. And everything held fine. The current on the FC was 3micro-Amperes. The water temperature levels stayed below 25 deg Celsius.

The problems that need to be fixed:

1. The biggest problem was created by the target power supply: the new card is not calibrated, the voltage is not regulating, but the main problem is the grounding of the output of power supply. Friedhelm measured 0.2V across the return and the cage (200mili-ohms resistance) .  This was probably overlooked.

2. The Auto-ramping routine didn't work. Controls would need to fix this.

3. The RGA didn't want to connect from the account Don created for me. So, we have only a RGA scan taken on Friday by Don, when the target was cold.

 

  273   Friday, March 22, 2013, 18:49 Aurelia LaxdalConditioning StationDevelopmentTM4FEBIAD HP with Dummy TargetCommissioning TCS - Part 1

Today, the commissioning of the TCS went well. The water/vacuum interlocks were checked OK. Then, the TCS was HV conditioned up to 33kV.

Tomorrow, the heaters will be ramped up.

  272   Wednesday, March 20, 2013, 08:19 David WangConditioning StationRepairTM4 Leak check new installed TM4 TP1 at conditioning station.

I leak checked new installed TM4 TP1 at conditioning station. The CS vacuum gauges reading were at 1.0-1.5xE-6 torr . Leak detector base leak rate 0.0xe-9atm.cc/sec, base pressure 0.0xe-4torr. I sprayed helium around the pump  inlet flange and KF 25 pump outlet flange to pump joint. There is no response on leak detector. The new installed TP1 is leak tight.

  271   Tuesday, March 19, 2013, 13:49 Bevan MossConditioning StationStandard OperationTM4CS Test Target #1Tubros Started

 Turbo Pumps have been started and are in normal operation. TP1 which has recently been replaced was started in soft start and had no issues. TP2 was started normally and tripped prior to reaching speed. It was left for a while and restarted. When restarted it was still at 17KRPM, it reached normal operation.

  270   Tuesday, March 19, 2013, 09:55 Bevan MossConditioning StationStandard OperationTM4CS Test Target #1Turbo pump 1 replaced roughing started

 David replaced the broken turbo pump this morning and I have started roughing at 9:54.

  269   Monday, March 18, 2013, 15:28 Bevan MossConditioning StationStandard OperationTM4CS Test Target #1Vented With Argon

 The conditioning station has been vented with argon. Time taken is not known but it is less than 3 hours. See attached picture for convectron gauge readings. CG1A is in air.

Attachment 1: Vented_with_Argon.JPG
Vented_with_Argon.JPG
  268   Monday, March 18, 2013, 12:39 Bevan MossConditioning StationRepairTM4CS Test Target #1TGHT PS Failure

The Model of the Power Supply (PS) is TSQLG 480-20/1500 and serial number is 2755.02.01.01.09.

We went to test the PS and supplied the required 480V and turned the local switch to on. At this point nothing happened, the controls screen didn’t light up nothing. We tried to run the PS in remote mode as that is what it had previously been set at and again there was no response. At this point I called the electrician the check that we were in fact supplying 480V. He checked all the way to the contactor inside of the PS (see attached picture). He also checked the 3 larger fuses and 6 smaller ones, they have not failed.

I have inquired with Jens Lassen who is more familiar with these PS and he has not had this issue before. He is going to have another look at the PS with the electrician specifically checking the 24VDC for the control board. Any further information or checks you could provide would be very helpful.

 This PS is needed for commissioning of a system and unfortunately this failure has come at a very in opportune time.  Although the PS is show to be several years old we have not actually used it aside from some minor tests ie does it turn on (it has previously).  I have phoned the manufacture to determine what else can be check and what the next steps are. Werner requested that I send an email (completed) so he could give it to their engineers.

Attachment 1: IMG_0529.JPG
IMG_0529.JPG
  267   Monday, March 18, 2013, 12:03 Bevan MossConditioning StationRepairTM4CS Test Target #1Turbo Pump 1 Failure and Venting

 Over the weekend Turbo pump one failed. It was attempted to restart the turbo in soft start but that also failed. Although the Vacuum was good enough to operate both Turbos are required to pass commissioning. As such the pumps were turned off at ~10:00 today. Venting started at 12:00.

  266   Thursday, March 14, 2013, 11:56 Bevan MossConditioning StationStandard OperationTM4CS Test Target 1Cooling Package Started

Bevan Moss wrote:

 The cooling package was started at 10:00 today. See attached picture. There is another snap shot at 10:03.

 The conductivity of the cooling package is above 5Mohm which is the minimum limit for the PS. This was achieved at 11:55. See attached picture.

Attachment 1: Cooling_package_1155.JPG
Cooling_package_1155.JPG
  265   Thursday, March 14, 2013, 11:25 Bevan MossConditioning StationStandard OperationTM4CS Test Target #1Turbos Started

 Turbos started at 11:14. TP1S achieved full speed in less than 2 minutes. TP1 and 2 tripped at 9 minutes. Restarted and reached at speed after another 1 minute 20 seconds.

Attachment 1: turbo_started_1115.JPG
turbo_started_1115.JPG
Attachment 2: vacuum_running_1124.JPG
vacuum_running_1124.JPG
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