Aggregator

Log Number: 4472890Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Dropping cavities 7 and 8 by 2 MV/m each to increase the graident in 0L04-8 for better regulation

Log Number: 4472889Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
0L03-8
Username: bschauml
Date/Time: 02-24-26_21:04:33
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.000 Lowering to raise energy lock cavity GSET
Previous OPS DRVH: 7.5
Special Instructions:

Log Number: 4472887Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
0L03-7
Username: bschauml
Date/Time: 02-24-26_21:04:05
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.000 Lowering to raise energy lock cavity GSET
Previous OPS DRVH: 9
Special Instructions:

Log Number: 4472886Logbook(s): 

• ELOG
• SRFPLASMA
• SRFLOG

Entry Makers: bschaumlBody: 

Cav 3: Onset @ 17 MV/m, quenching above 17.7 MV/m

Cav 5: Onset still @ 11 MV/m, now quenching at 14.7 MV/m

Cav 7: Onset @ 11.3 MV/m, 10 Rem/Hr @ 16.3 MV/m

Cav 8: Onset @ 18 MV/m, hit 21 MV/m admin limit. Several bursts of FE on the way up to said limit

Log Number: 4472885Logbook(s): 

• MOLLER
• ELOG

Tags: 

• Moller
• PD

Entry Makers: jonesgaskelldwinesdougberdnikciprianBody: 

Hall A techs continued forward progress on blue utility platform de-installation and Pion donut welding work.

Log Number: 4472884Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Turned off 1L02, 1L04, and 1L07. Turning off 1L08 raised the 1L05 cryo return beamline DecaRAD, so I turned it back on.

Log Number: 4472883Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday February 23 through 18:00 Tuesday February 24 AES DC power Systems Powering Up and Performing HCO on 10 AMP & 20 Amp Trim System after SAM 2025

2026-02-24 15:02 -

Log Number: 4472878Logbook(s): 

• ELOG

Entry Makers: powersBody: 

I pulsed processed 1L05-8 and got the quench field to go up from 12.5 to 16.8 and 1L05-5 to go from 13.4 to 14.3. We might be able to make more progress with pulsed processing cavity 5 as it just takes time. Next candidates for pulsed processing are cavities 1L05 1 then 6 Should continue with 1L05-5.

On 1L10 candidates are cavities 1, then 5, then 4 then 7. . . something for tomorrow.

A note to RF the pulsed RF power was only about 1L05-5 should be able to go up maybe another kW if a drive attenuator can be adjusted.

Log Number: 4472877Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

ACE Team Successfully Replaced 3 monitors on the OPS Wall
CED support for TAG5C and 1L05

Log Number: 4472871Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

Starting to go per AES

Log Number: 4472870Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L22-3
Username: bschauml
Date/Time: 02-24-26_16:42:41
RF Status: Bad
Tuner Status: Good
Comment: C100 Bypassed - HVPS-Unknown, No HV in bay 1
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4472869Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L22-1
Username: bschauml
Date/Time: 02-24-26_16:42:41
RF Status: Bad
Tuner Status: Good
Comment: C100 Bypassed - HVPS-Unknown, No HV in bay 1
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4472868Logbook(s): 

• ELOG
• RFLOG

Entry Makers: michaelmBody: 

Log Number: 4472867Logbook(s): 

• ELOG
• RFLOG

Entry Makers: michaelmBody: 

Attempt RFCM resets and reseats first. More invasive diagnostics afterwards

Log Number: 4472866Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Just as reference. Before the Prebuncher (IPM1I05, figs 3 and 4) there is no vertical beam motion at 5 KHz, afterwards at IPM0I01, there is a vertical motion peak at 5 KHz (Figs 1 and 2). At the prebuncher scope IASK,QASK, GASK, and PASK have 4 KHz spikes.

Log Number: 4472865Logbook(s): 

• ELOG
• RFLOG

Entry Makers: michaelmBody: 

Log Number: 4472864Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             02/24/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4472863Logbook(s): 

• ELOG

Body: 

Replaced RFCM's in 2L14-6, 2L16-6 and 2L19-6 but found very weak drives in all three upon RF recovery. Replaced filament bd. in 2L08-3 and restored it to RF along with rest of zone. 2L21-6 KMAI attempt yesterday and tube is struggling with output at .79 A. Filaments raised from 6.2v to 6.4v with KCCU raising to .92A and KMAI increasing from 1.3ma to 1.7ma. Afraid tube is going but will monitor again tomorrow. Techs: Chris and Trey.

Log Number: 4472862Logbook(s): 

• ELOG
• RFLOG

Entry Makers: michaelmBody: 

From attached:
"Filament board was also replaced in 0L04-3 but it still had original Filament Voltage High fault and only ~.54a vice ~3.5a like the others. Board connections and voltage ramp at tube looked good. Klystron filament needs further T/S. Techs: C. Kerns and X. Gomez"

Log Number: 4472861Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Inj500KeV
User: lrichard