Aggregator

Log Number: 4369841Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: BSY
User: mock

The following PVs failed to write:
ISD3H003DEF
ISD3H003L
ISD3H004DEF
ISD3H004L

Log Number: 4369840Logbook(s): 

• ELOG

Body: 

Task approved by work supervisor.

Log Number: 4369839Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Cavity has dropped multiple times since this morning. It is becoming concurrent with CRFP oscillations (fig 2). We still don't fully understand the source of the oscillations, so cavity derated 0.5 MV/m to help cope.

Log Number: 4369838Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 14054Title:
Aluminum Waterflow Alarm

Summary:
After repairs were performed, operators began preparing the Hall for beam permit. At which time this alarm came in. Upon investigation, the flow rate appears to read back negative values.

Log Number: 4369832Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Log Number: 4369831Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Injector
User: alexs

The following PVs failed to write:
ISD3H003DEF
ISD3H003L
ISD3H004DEF
ISD3H004L

Log Number: 4369830Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Inj5MeV
User: alexs

The following PVs failed to write:
ISD3H003DEF
ISD3H003L
ISD3H004DEF
ISD3H004L

Log Number: 4369828Logbook(s): 

• HALOG
• ELOG
• RADLOG

Entry Makers: alexsBody: 

Log Number: 4369823Logbook(s): 

• ELOG

Entry Makers: mockBody: 

The alarm only announces when flow went to zero. Past zero, into the negatives the alarm clears and appears good but it is clearly not.

Log Number: 4369822Logbook(s): 

• ELOG

Body: 

For the upcoming maintenance day we would like to repair some damaged power and signal cables in the North Linac for the BLM's. This would require access to the NL if possible.
We will also install the HV supply to FSD system interface box that we removed earlier for repairs (reference log #4356378.) and has been running on our test stand for 3 weeks with know errors.

Log Number: 4369821Logbook(s): 

• ELOG

Body: 

For the upcoming maintenance day we would like to install UPS batteries, in the low voltage UPS system in the PSS racks. If time allows we would also like to replace the mag-lock at the BSY access door #1.

Log Number: 4369820Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 14054Title:
Aluminum Waterflow Alarm

Summary:
After repairs were performed, operators began preparing the Hall for beam permit. At which time this alarm came in. Upon investigation, the flow rate appears to read back negative values.

Log Number: 4369818Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Looks like the gpm went similarly negative last time it was restored

Log Number: 4369816Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Just after given the all clear, we're seeing the aluminum water flow went negative? We're unsure as to the physicality of this readback so we're contacting I&C

The alarm goes when the readback hits zero, but does not latch once it moves negatively, which is concerning.

Log Number: 4369815Logbook(s): 

• ELOG
• INCLOG

Body: 

I&C replaced 24V power supply for the aluminum skid LCW circulation pump control. Restarted skid. Verified operation and read backs in EPICS

Log Number: 4369814Logbook(s): 

• ELOG

Entry Makers: samariBody: 

I&C informed us that the tagger skid pump's power supply was swapped and we've verified that all is functional. The soft warning for the high tank level was deemed nominal by I&C. FSD and the alarm handler show no issues.

Log Number: 4369813Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 14037Title:
Hall D beam dump

Summary:
Beam tripped off and we got alarms for Aluminum Water flow, differential pressure, etc. (see linked ELOG). Investigating further.

Log Number: 4369805Logbook(s): 

• ELOG

Body: 

PTW is 7262 and on issue. This is needed to send beam back to Hall D. Approved.

Log Number: 4369767Logbook(s): 

• POLOG
• ELOG

Entry Makers: samariBody: 

Using 1 minute's worth of BPM data in each arc when we were running micro amp current 5th pass (see Fig 1) with the corresponding FOpt's dispersion data, I was able to calculate the change in momentum given the 15 second oscillations peak energy variation at the 80 second interval.

Log Number: 4369766Logbook(s): 

• ELOG

Entry Makers: samariBody: 

The chopper SSA tripped off but was recovered easily.