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Please do FE onset measurements for 1L05 3, 5, 7 and 8 also 1L110-2 and 8

15 hours 6 minutes ago
Log Number: 4472878Logbook(s): 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.

powers

5 KHz PreBuncher Oscillation Still There

15 hours 59 minutes ago
Log Number: 4472866Logbook(s): 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.

samari

Operator SIGN IN

16 hours 9 minutes ago
Log Number: 4472864Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             02/24/2026
SHIFT:               Swing

The operator has read the following:
bschauml

COMMENT ON RF work for 2026 HCO

16 hours 17 minutes ago
Log Number: 4472863Logbook(s): 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.

kerns

PR for tracking: 0L04-3 HV TS required

16 hours 18 minutes ago
Log Number: 4472862Logbook(s): 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"

michaelm

Vacuum Group Summary 2026-02-24

16 hours 27 minutes ago
Log Number: 4472859Logbook(s): Body: 

0L03 - Vibration isolation block setup

2L25
- 2L25A and 2L26A girder connections made
- NEG activation and leak check slated for tomorrow morning

VDP1L27 - Activation cart ready for NEG reactivation tomorrow

1L13 - scroll pump swapped

duzik

COMMENT ON RF work for 2026 HCO

16 hours 27 minutes ago
Log Number: 4472858Logbook(s): Body: 

1L05
Cavity 3 = Replaced the filament to resolve the read back issues.
Cavity 8 = Discovered the fiber was disconnected on the AIB side preventing read backs for the cavity. Fiber installed and read backs appeared.
1L10
Cavity 8 = Filament board installed.
1L21
Cavity 5 = Installed 2.5W Amp, Filament Board, and Mod Anode board so the cavity can get turned over to SRF for troubleshooting the longstanding Arcing issue.

Techs: Evonda V., Gunner K., Alex S. and Adam S.

evonda

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