Aggregator

Gun Ready for Beam (after activation)

3 days 8 hours ago
Log Number: 4544392Logbook(s): Body: 

The Gun valve is under EPICS control. Will remove gun LOTO Monday morning.

The anode is now connected to the anode pico-ammeter (through protection box).

The only noteworthy issue was that the Transverse Manipulator disengaged again, as it had during the previous activation.

suleiman

COMMENT ON Perform rfMiram12GeV 1-0

3 days 9 hours ago
Log Number: 4544391Logbook(s): Body: 

Completed RF 1.0 Legacy zones Miram curve characterization in the 18 zones in the south that are RF 1.0

144 cavities minus a number of cavities already bypassed (14 cavities) and some other cavities (3 cavities) needed to be bypassed to complete curves due to high KMAI trips. Total of 127 Miram curves were obtained. 51 of them would require an increase in filament voltage and 71 would require a decrease in filament voltage, and 4 cavities require no change , according to results.

xgomez

Operator SIGN IN

3 days 9 hours ago
Log Number: 4544390Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             08/23/2026
SHIFT:               Swing

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
anthony

iocnl26rfhtr restored

3 days 11 hours ago
Log Number: 4544388Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 14:05:32 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored

3 days 11 hours ago
Log Number: 4544387Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 14:05:32 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored

3 days 11 hours ago
Log Number: 4544386Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 13:33:43 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored with warnings

3 days 11 hours ago
Log Number: 4544385Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 13:33:43 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored with warnings

3 days 11 hours ago
Log Number: 4544384Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 13:33:43 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

Confirmed 1L26 heater chassis still powered on despite iocnl26rfhtr lost comms

3 days 11 hours ago
Log Number: 4544383Logbook(s): Entry Makers: alexsBody: 

This ioc is a known issue since Friday, but has only been briefly blipping out of comms for no more than a few minutes. After it dropped for longer than 10 minutes, consulted with RF on call and was advised that as long as the FPGA in the heater chassis is still working, it's safe to leave the ioc issue until Monday. Locally checked the chassis, and the FPGA heartbeat light is still illuminating despite the ioc HB being off.

alexs

iocnl26rfhtr restored

3 days 12 hours ago
Log Number: 4544382Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 12:35:32 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored

3 days 13 hours ago
Log Number: 4544380Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 12:17:26 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

iocnl26rfhtr restored

3 days 13 hours ago
Log Number: 4544379Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-08-23 12:07:12 The output from the myRestore execution was as follows: iocnl26rfhtr <NOTE> Rf12Htr_2525: Provided macro *IOC* is never used Pause: 15 second(s) Rf12Htr_2525 Execute: caput R1QXHHTRMOD 0 (success) Old : R1QXHHTRMOD 0 New : R1QXHHTRMOD 0 Pause: 12 second(s) Execute: caput R1QXHTSWI 1 (success) Old : R1QXHTSWI OFF New : R1QXHTSWI MAN Pause: 3 second(s) Rf12Cryo_heatset@2026-08-23
alarms

Operator SIGN IN

3 days 17 hours ago
Log Number: 4544378Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             08/23/2026
SHIFT:               Day

The operator has read the following:
alexs

VIPAA0n vacuum spike

3 days 21 hours ago
Log Number: 4544375Logbook(s): Entry Makers: msmithBody: 

Arc A ion pumps briefly railed around VIPAA04 and VIPAA05. Came back down on its own. VIPAA05 is still elevated but slowly recovering. Seems like this happens on occasion. It was previously OpsPr'd then closed. The instruction in the comment says to re-open if necessary.

msmith

Operator SIGN IN

4 days 1 hour ago
Log Number: 4544369Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             08/22/2026
SHIFT:               Owl

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
msmith

COMMENT ON Gun2 photocathode Heat and Activation - August 2026

4 days 6 hours ago
Log Number: 4544368Logbook(s): Body: 

The SLSP-5247-4 GaAs photocathode mounted on puck #3 has been activated with 8 yo-yo's (full-area). The puck has been inserted in the gun with the ear at about 15 degrees CCW from the vertical direction (same angle as before). At the long manipulator, this corresponds to 25 degrees.

The HV bias was set to "5" on the battery box. The picoammeter was set 200 nA Full Scale then 2 uA after during the first Cs peak.

The Cs was heated with 4.6 A (0.98 V) and vacuum went to 8 nA. The first QE Cs peak started to show up after 8 minutes.

suleiman

Shift Information

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CEBAF Program
MCC Crew Chief Blackshaw
MCC Operators Barker
Program Deputy Park
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