Aggregator

Log Number: 4490653Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4490652Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4490651Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4490650Logbook(s): 

• ELOG

Body: 

Replaced MQK5C06A and MQR8S03 SCE PS due to regulation error and faulty front panel Comm. switch. Function and addressing were verified. O'brien, Colemanj

Log Number: 4490647Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L19-6
Username: kerns
Date/Time: 04-23-26_12:01:15
RF Status: Good
Tuner Status: Good
Comment: DRVH=8.000 New 2.5w amp and testing for CWVF.
Previous OPS DRVH: 4
Special Instructions:

Log Number: 4490646Logbook(s): 

• CLOG
• ELOG

Body: 

CHL1/ SL cold compressor trip at 1144. The likely cause is testing of 2L25.

Log Number: 4490645Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Injector SME confirmed this could be masked

Log Number: 4490644Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Inj500KeV
User: bjacob

Log Number: 4490641Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Recovered drive and RF and all looks good now. Set ODVH to 8.0 Mv/m from the 4.0 and it could do more when RF warms up.

Log Number: 4490639Logbook(s): 

• ELOG

Body: 

The RFoF transmitter for the NL 499 LO signal has been swapped, and the LO signal in NL is restored to a similar level. During the swapping, the reference signal to the injector was interrupted. This issue was resolved , and Yan has been informed about the possible phase jump in the injector NC cavities.

The objective of the entire task is to determine whether the original RFoF transmitter is causing elevated NL gang phase variation. From now on, monitoring of this phase may help to answer this question.

Log Number: 4490638Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L13-5
Username: kerns
Date/Time: 04-23-26_11:28:53
RF Status: Good
Tuner Status: Good
Comment: 2.5w amp replaced and drive is good now. Set ODVH TO 8.0 Mv/m and optimized RF.
Special Instructions:

Maintenance Tag: Component: 2.5W Amp {Removed SN: 274, Replacement SN: 158}

Log Number: 4490637Logbook(s): 

• ELOG
• INCLOG

Entry Makers: mmuellerBody: 

Successfully changed the nomenclature from ITV3C05 to IYG3C05

Log Number: 4490636Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L13-5
Username: kerns
Date/Time: 04-23-26_11:27:05
RF Status: Bad
Tuner Status: Good
Comment: DRVH=8.000 New 2.5w amp and drive is strong now
Previous OPS DRVH: 4.5
Special Instructions:

Log Number: 4490634Logbook(s): 

• ELOG

Body: 

Log Number: 4490635Logbook(s): 

• POLOG
• ELOG

Entry Makers: shukuiBody: 

I found lasers were all off due to loss of laser RF (fig 1 and 2), not sure what happened. Asked Tomasz who said there might be RF activities going on. I brought all of them back. It will be good if CIS can get a headsup for any laser RF work.
Also, the injector tunnel is getting pretty warm.

Log Number: 4490633Logbook(s): 

• ELOG

Body: 

Magnet Group has inspected this magnet via ATLIS-120082

Reconnected the magnet and checked polarity.
Closing ATLis and PTW

- Kissinger, Delk

Log Number: 4490632Logbook(s): 

• ELOG

Entry Makers: jktBody: 

The warm window IR sensors are responding ok (notice how they all increase in the attached picture).

Log Number: 4490627Logbook(s): 

• ELOG

Entry Makers: banksBody: 

Took a look at the magnet. No leaks present. Interlock drop check passed. Verified LCW valves are open. All looks okay. Ready for operations.

Log Number: 4490625Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Late entry since a PR was not put in after the initial drops. 0L03 was dropping high voltage and having trouble with low cathode current. Despite not being requested, mod anode voltage was read on the tube, and the readback was spiking between 0 and .8 kV even with the cavity 4 CPS load resistor removed. After replacing the mod anode board, the readback is now properly reading 0. We can't say for sure that it's fixed yet until the north linac gets power permit, so leaving the PR open for now. Note that the cavity is unbypassed, but the tuner is still stepped off.

Log Number: 4490624Logbook(s): 

• ELOG

Body: 

The new exhaust fan is installed and in automatic operation.