Aggregator

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor

14 hours 44 minutes ago
Log Number: 4495423Logbook(s): Tags: Body: System UN-Masking for: BeamLossMonitor
User: samari
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8
samari

Impact of SHG Doubling Efficiency on DC Light and Beam Bleed-Through

14 hours 49 minutes ago
Log Number: 4495422Logbook(s): Body: 

The laser doubling efficiencies are currently too low (see linked entries). The bleed-through issues observed in the halls are likely tied to the performance of the laser system. In particular, the level of DC light present between the CW pulses is directly related to the second-harmonic generator (SHG) doubling efficiency.

Improving SHG performance is therefore essential: increasing the conversion efficiency will reduce the residual DC light between pulses and, in turn, mitigate the resulting electron beam bleed-through.

suleiman

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

15 hours 14 minutes ago
Log Number: 4495414Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: samari
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09
samari

QE Measurement

15 hours 15 minutes ago
Log Number: 4495412Logbook(s): Body: Spot Location: (13250,19250), Charge: 25.292102999999994

Laser Wavelength Atten Setting Laser Power Current HV PS Current QE PV Updated? Update Time/Reason Not Updated (nm) (W) (uA)</
samari

iCalibrate: Hall D

15 hours 22 minutes ago
Log Number: 4495406Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa
msmith

Comparing bleedthrough to last run

15 hours 59 minutes ago
Log Number: 4495399Logbook(s): Entry Makers: deirBody: 

Figs 1 & 2: 40 uA to xC (4th Pass) and 20 uA to xA (5th pass) but no significant bleedthrough measureable in Hall B (5th pass).

Here the fifth pass vertical separators are on, effectively kicking any bleedthrough that may come from the C laser and go through the A & D slit into Hall A.

deir

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MCC Crew Chief Richardson
MCC Operators Anthony, Shenenberger, Shriner
Program Deputy Sereno
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