FILL 10650
Summary
start: May 21, 2025 05:49:25 AM UTC
end: May 21, 2025 01:28:38 PM UTC
duration: 0 days 07:39:13.206000
tags:
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INTENSITY_RAMPUP
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OP_DUMP
comments:
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Second fill with 1800b
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The fill was prematurely OP dumped before loosing teh cryogenic condition of the LHC
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A sensor on the QURQA P8 is broken. Experts need an access to P8 service area (cryo zone in UX85). The repair will require opening the QURC and take ~3-4 hours. Afterwards, they expect at least 8h for the recovery.
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During the filling, test with orbit bumps in P4 to check the effect on the BBQ tune measurements. With a -500um bump, a tune shift of 5e-3 was observed. The effect was much smaller for a positive bump.
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At the start of the ramp, losses at TCLA.D6R7.B1 above 50\% of the dump threshold. The power loss peaked at about 1.5kW.
Cycle duration
Beta-functions at the IPs
Crossing angles
Octupoles
Trims
Tune trims
Chromaticity Trims
Intensity
Cycle intensity
BBB SB intensity
Violin BBB intensity
SB bunch intensity
Bunch Length
Bunch Length Fill
Emittance
B1 along the cycle
B2 along the cycle
Emittance growth at injection
Summary violin plot
BBB in SB for B1
BBB in SB for B2
Bunch brightness
Beam properties summary
Luminosity
Overview
Luminous Regions
BBB luminosity in SB
Cross-sections
ADJUST
STABLE BEAM
