Cornell University Unit Name

CESR BPM development

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Resources

• Toy Monte-Carlo simulation of the CBPM system: note explaining how to use the simulation and what are the sources of errors and how do they translate in the button data download PDF
• First pitch-and-catch bench test feasibility measurements: note detailing the first feasibility bench measurements for the pitch-and-catch scheme download PDF
• AFE refurbishing instructions (10/13/2023): here

May 2, 2025

Meeting Materials

• Will: more CBPM3 time scan features like turn averaging

April 18, 2025

Meeting Materials

• Will: Sync stripline BPM hardware update

March 7, 2025

Meeting Materials

• Antoine: detailed analysis of the latest CBPM gain calibration campaign.

February 15, 2025

Meeting Materials

• Antoine: investigating waveform time skipping on the bench; old vs new timing card.

January 31, 2025

Meeting Materials

• Vardan: Libera resolution (precision) measurement.
• Charlie, Will: updated CBPM setup for signal generation.

November 22, 2024

Meeting Materials

• Antoine: sampling clock jitter.
• Antoine: waveform time step skipping.
• Antoine: lots of individual plots for waveform time step skipping from 2011.

November 15, 2024

Meeting Materials

• Antoine: sampling clock jitter.
• Antoine: waveform time step skipping.
• Antoine: lots of individual plots for waveform time step skipping.

November 8, 2024

Meeting Materials

• Antoine: sampling clock jitter.
• Antoine: lots of individual plots.

November 1, 2024

Meeting Materials

• Antoine et al: summary of machine study week studies.

October 11, 2024

Meeting Materials

• Antoine, Vardan: first GDX testing for orbit correction.
• Will: Synchrotron stripline BPM

September 20, 2024

Meeting Materials

• Antoine: CBPM gain calibration using the 4-wave approach and comparison with 3-wave and bump approaches. 4-wave is quite a success and all automated.
• Antoine: CBPM gain calibration about 3-wave attempt back in June.

August 30, 2024

Meeting Materials

• Antoine: CBPM3 temperature versus fan speed. A first look.

June 14, 2024

Meeting Materials

• Antoine: Estimated single-turn precision as a function of instrumental errors: timing card upgrade.

June 7, 2024

Meeting Materials

• Will: CBPM3 status update

May 17, 2024

Meeting Materials

• Will: CBPM3 status update

April 26, 2024

Meeting Materials

• Antoine: Gain calibration repeatability study during MS

April 12, 2024

Meeting Materials

• Antoine: How the gain calibration map affect the gain reconstruction (Poisson v. CST studio)

March 22, 2024

Meeting Materials

• Antoine: Gain calibration results from Winter machine study week
• David: Gain calibration results from Winter machine study week
• Vardan: Libera fast acquisition

February 2, 2024

Meeting Materials

• Will: CBPM timing explainer

January 12, 2024

Meeting Materials

• Vardan: follow-up on CBPM stability using orbmon data

December 1, 2023

Meeting Materials

• Vardan: follow-up on CBPM stability using orbmon data

November 17, 2023

Meeting Materials

• Vardan: CBPM stability using orbmon data

October 27, 2023

Meeting Materials

• Antoine: Offline analysis of gain calibration data from October 2, 2023

October 20, 2023,

Meeting Materials

• Antoine: AFE beam characterization with 4 AFEs configured with final design

October 6, 2023

Meeting Materials

• Antoine: AFE beam characterization w/ fixed gain amplifier replaced by Bob's diode adapter board for four differents R143 values

June 23, 2023

Meeting Materials

• Antoine: AFE beam characterization with new inductor, different R134 values and Shottky diode

June 16, 2023

Meeting Materials

• Len: AFE noise investigation on the bench removing fixed gain amplifier
• Len: AFE noise investigation on the bench replacing fixed gain amplifier
• Will: comparing measured radiation before/after shielding

June 2, 2023

Meeting Materials

• Antoine: AFE beam characterization tweaking R134 resistor value and trying a two-pi filter
• Len: AFE noise investigation on the bench replacing fixed gain amplifier (but got heat damaged)

May 19, 2023

Meeting Materials

• Will: module failure history for CBPM2 maintenance
• Antoine: AFE beam characterization after removing 33 ohm R134 resistor
• Len: AFE noise on the bench before after removing R134 resistor

May 12, 2023

Meeting Materials

• Antoine: AFE beam characterization after removing 10 pF capacitors
• Len: AFE noise investigation on the bench with focus on power regulator

May 5, 2023

Meeting Materials

• Will: CBPM3 hardware roadmap
• Len: expected output voltages for AFE fixed and variable regulators

April 28, 2023

Meeting Materials

• Antoine: AFE beam characterization (unity gain, more amplification, "deployed" network filter)
• Len: AFE noise investigation on the bench

April 26, 2023

Meeting Materials

• Antoine: in situ instrumental uncertainty measurement, Poisson vs Binomial uncertainty in input distribution

April 21, 2023

Meeting Materials

• Antoine: Applying cable filtering to simulated button waveform
• Will: Second round of network analysis on AFE
• Will: Thermal load test on CBPM3 I/O board

April 14, 2023

Meeting Materials

• Will: First round of network analysis on AFE

March 24, 2023

Meeting Materials

• Antoine: Pedestal and current scan for undamaged AFEs with unity gain and more signal amplification (schematic network filter)
• Len, Bob: Two AFE boards modification for more signal amplification
• Len, Bob: Bench fixed gain RMS noise before/after disconnecting amplifier

March 17, 2023

Meeting Materials

• Antoine: Pedestal and current scan for undamaged AFEs with unity gain

March 10, 2023

Meeting Materials

• Will and Len: Bench DC measurement of 12W3 board as board of unity gain test
• Will and Len: Bench AC measurement of 12W3 board as board of unity gain test

March 2, 2023

Meeting Materials

• Antoine: 12W triplet gain study overview at MS meeting

February 24, 2023

Meeting Materials

• Antoine: 12W triplet gain study round #2

February 17, 2023

Meeting Materials

• Antoine: 12W triplet gain study to improve SNR

January 18, 2023

Meeting Materials

• Antoine: CBPM raw button distribution fit to beam data (first attempt)

November 2, 2022

Meeting Materials

• Antoine: CBPM raw button distribution fit, comparing PDF and non-PDF approach and looking at real data-like simulation

October 19, 2022

Meeting Materials

• Antoine: CBPM raw button distribution fit, solving the issue for non-zero peak-offset values

October 5, 2022

Meeting Materials

• Antoine: CBPM raw button distribution fit, issue for non-zero peak-offset values

September 14, 2022

Meeting Materials

• Antoine: CBPM3 database, data/metadata scheme

September 7, 2022

Meeting Materials

• Antoine: CBPM raw button distribution fit

August 25, 2022

Meeting Materials

• Antoine: CBPM gain: beam-driven gain calibration method presentation at machine study meeting

July 27, 2022

Meeting Materials

• Antoine: CBPM gain: beam-driven gain calibration method follow-up

July 14, 2022

Meeting Materials

• Antoine: CBPM noise: trying to understand high noise around 18E: swapping power supply, swapping modules

July 13, 2022

Meeting Materials

• Antoine: CBPM gain: beam-driven gain calibration (fit for positions and gains)

June 30, 2022

Meeting Materials

• Antoine: CBPM signal-to-noise ratio and beam position precision

June 8, 2022

Meeting Materials

• Antoine: CBPM data quality: cross sum difference

Nov 10, 2021

Meeting Materials

• Antoine: CBPM button response: MWS simulations, button width comparison

July 16, 2021

Meeting Materials

• Antoine: CBPM button response, MWS simulations, comparison with Poisson
• Antoine: CBPM3 variable gain pedestal and resulting position error

May 21, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction, comparison between CESRV non-lin and linear approximation

May 7, 2021

Meeting Materials

• Antoine: CBPM button reponse; CST microwave studio simulation
• Antoine: CBPM3 non-linear beam reconstruction; machine learning for in-situ fitting of turn-by-turn errors

April 23, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction; CESRV performance
• Antoine: CBPM3 non-linear beam reconstruction; on the turn-by-turn resolution in the South Arc

April 9, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction; Python/CESRV nonlin binding and CESRV nonlin 3-button feature

March 26, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction; final CESRV and Python comparison

March 12, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction

Feb 12, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction

Jan 29, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction

Jan 15, 2021

Meeting Materials

• Antoine: CBPM3 non-linear beam reconstruction

Nov 20, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: light-weight proof of concept -> full-scale proof of work

Nov 6, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database, display multi-user

May 22, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database

May 15, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database

May 8, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database

May 1, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database

April 24, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development: database

April 17, 2020

Meeting Materials

• Antoine: CBPM3 mock end-to-end system development

April 10, 2020

Meeting Materials

• Antoine: CBPM3 EPICS 7 + Python, CBPM3 data base development

April 3, 2020

Meeting Materials

• Antoine: CBPM3 EPICS 7 + Python, CBPM3 data base development (new IT dabatase service on pg1)

March 27, 2020

Meeting Materials

• Antoine: CBPM3 data base 10 Hz development

March 6, 2020

Meeting Materials

• Kevin: CST bpm response and antenna results
• Antoine: CBPM continuous monitoring online display

February 12, 2020

Meeting Materials

• Antoine, Nate: data analysis for CBPM continuous monitoring (CCM)

January 15, 2020

Meeting Materials

• Antoine, Nate: increasing beam current to improve resolution, Python3 + MPM_NET

December 18, 2019

Meeting Materials

• Antoine, Nate: Python3 + CBI_NET to read data from one CBPM module and test data throughput

December 12, 2019

Meeting Materials

• Antoine, Nate: Python3 + CBI_NET to communicate with the CBPM module

December 4, 2019

Meeting Materials

• Kevin: CST progress
• Antoine: averaging, correlation and resolution (machine study data and toy MC)

November 20, 2019

Meeting Materials

• Kevin: Machine study analysis and 1um resolution
• Antoine: averaging, correlation and resolution (machine study data and toy MC)

November 13, 2019

Meeting Materials

• Kevin: CST BPM example + signal to noise results
• Antoine: Signal-to-noise ratio and Timing offset machine study results, summary of current/future designs and the 1 micron goal

November 6, 2019

Meeting Materials

• Antoine: spreadsheet with simulations summary and the question 'accuracy' versus 'precision'
• Kevin: jitter and resolution

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October 30, 2019

Meeting Materials

• Antoine: digitizer noise + machine study data analysis (resolution and pulse shape) + toy MC simulations (updates and averaging)
• Kevin: BMAD lattice + jitter/resolution

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October 23, 2019

Meeting Materials

• BPM Timing (Kevin)
• CBPM toy MC simulation + quick take away from data (Antoine)

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October 16, 2019

Meeting Materials

• CBPM intrinsic resolution and vertical beam motion (Antoine)
• Timing Errors (Kevin)

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October 9, 2019

Meeting Materials

• On correctly extracting the CBPM single-shot resolution + new data + buttons location survey (Antoine)

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October 2, 2019

Meeting Materials

• First re-analysis of the 2016-2017 data (Antoine)