Aggregator

Log Number: 4487081Logbook(s): 

• ELOG

Body: 

Cavity #3 Klystron lost cathode current at recovery of the Injector after a controlled access. KMAV displayed a 0.700 Vdc reading when 0 Volts was requested. 0.700 Vdc on the Mod Anode should not have caused the drastic reduction in cathode current from ~ 1.2 A. to 0.23 A. Cathode current recovered to 1.21 A. after Filament Voltage was raised from 5.9 to 7.9 Vdc. It took about ~26 minutes for the cathode current to recover to the former value. This voltage increase should not cause any issues unless the Klystron has been damaged internally.

Log Number: 4487080Logbook(s): 

• HBLOG
• ELOG

Entry Makers: hauenstBody: 

HallB counting house will be unstaffed until tomorrow. Day shift is on standby. For important matter please contact the RC

Log Number: 4487075Logbook(s): 

• BTLOG
• ELOG

Entry Makers: ryanmbdturnerBody: 

X plane with 10 turns looks outstanding. No slow drift apparent, great matches. Will do Y plane next

Log Number: 4487073Logbook(s): 

• ELOG
• BTLOG

Body: username = ryanmb, hostname = opsl07, CSUE version = 1-23
login_key = pro, workspace = OPS

Data collection parameters:
corr2_s = 36.4081755003566
input_momentum = 6.73999802152278
launch_s = 46.3751795003566
corr2_initial_bdl = 10.5
alpha = -1.307436551712937
emit = 1.413382274777768E-08
start_element = MHB0L04H
config_file = /a/opsdata/fiefdata/fileio/r/rayTrace_12GeV/config/F1-0/10Turns/IPM0L06_to_ILD_x_10turn.xml
max_orbit = 1.5
corr2_momentum = 32.5053162270802
measure_dwell = 50
start_pass = 1

Log Number: 4487071Logbook(s): 

• ELOG

Body: 

Cards were swapped today for MQS1L08 (NL09B10 ch. 9), MHB0L01AV (IN02B10 ch. 21), and MAT1L16H (NL19B09 ch. 7).

Log Number: 4487070Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Fault is indicated when there is no KCCU output. This is caused be no filament heaters. Replaceing the filament board to correct will require lockout of CPS to get into the HPA cabinet and also SRPD while HPA is open during beam operation.

Log Number: 4487069Logbook(s): 

• ELOG

Body: 

Worked on a list of 24 legacy zone cavities that have problems and either GSET 0 or bypassed that will require beam permit time to troubleshoot RF problems before the 4 Gev beam run. With the beam jitter testing this weekend, seven cavities have been turned off this weekend and today and the list seems to be growing rapidly while maintenance time is nil. Plans need to be discussed soon 2L11-8 comm's problem and two about 6 zones in the South were cable checked but that and 2L03 transformer install work is about all we could do with the machine without beam interruption and testing.

Log Number: 4487067Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: CryoModule
User: eforman
Areas: NorthLinac SouthLinac

CryoModule Devices:
1L14
1L03
1L02
1L04
1L05
1L07
1L06
1L08
1L09
1L10
1L11
1L12
1L15
1L13
1L16
1L19
1L17
1L18
1L20
1L21
1L22
1L23
1L24
1L25
1L26
2L14
2L03
2L02
2L04
2L05
2L07
2L06
2L08
2L11
2L09
2L10
2L12
2L15
2L13
2L16
2L19
2L17
2L18
2L20
2L21
2L22
2L23
2L24
2L25
2L26

Log Number: 4487065Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16718Title:
0L03-4 No Forward Power

Summary:
0L03-4 started to SOS while performing BSList 120021. Looks like it's forward power started drooping. Attempted an OLT for good measure but sure enough, no forward power.

Log Number: 4487064Logbook(s): 

• BTLOG
• ELOG

Entry Makers: ryanmbdturnerBody: 

This is an example of what happened during the cavity SOS during rayTrace.

Cavity 0L03, cavity 4 SOS'd during rayTrace collection. Here are a few plots from rayTrace analyzer raw plots with the elegant data.

Log Number: 4487061Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             04/13/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4487060Logbook(s): 

• ELOG

Entry Makers: settlegeesamanBody: 

we looked at the spectra of 1427 MHz and 70 MHz in 0L04 and 1L22 and don't see any spurs

Log Number: 4487059Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             04/13/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4487057Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4487056Logbook(s): 

• DCLOG
• ELOG

Entry Makers: janakBody: 

Took setpoint and cycled again

Log Number: 4487055Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16718Title:
0L03-4 No Forward Power

Summary:
0L03-4 started to SOS while performing BSList 120021. Looks like it's forward power started drooping. Attempted an OLT for good measure but sure enough, no forward power.

Log Number: 4487053Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Took set point and cycled without issue. It is the 3rd time it has done this in the last couple of hours. Likely needs a trim card swap.

Log Number: 4487051Logbook(s): 

• ELOG
• BTLOG

Body: username = ryanmb, hostname = opsl07, CSUE version = 1-23
login_key = pro, workspace = OPS

Data collection parameters:
corr2_s = 36.4081755003566
input_momentum = 6.73999802152278
launch_s = 46.3751795003566
corr2_initial_bdl = 10.5
alpha = -1.307436551712937
emit = 1.413382274777768E-08
start_element = MHB0L04H
config_file = /a/opsdata/fiefdata/fileio/r/rayTrace_12GeV/config/F1-0/10Turns/IPM0L06_to_ILD_x_10turn.xml
max_orbit = 1.5
corr2_momentum = 32.5053162270802
measure_dwell = 50
start_pass = 1

Log Number: 4487047Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 04-13-26
Time : 15:27:42
Day : Monday
Shift : Swing

Crew Chief : Forman
Program Deputy: Ogur
Team : F
Arm : Yoon
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel, Yoon

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4487045Logbook(s): 

• DCLOG
• ELOG

Entry Makers: janakBody: 

Took setpoint and cycled. Did not swap TC. Second time today