lhc systems providing post-mortem dataidentifying pm-like lhc data available from bi systems –bitb...

LHC Systems Providing Post-Mortem Data

BI-TB

16/5/2019

Stephen Jackson

Diogo Miguel Louro Alves

Manuel Gonzalez Berges

Enrico Bravin

Marek Gasior

Lars Jensen

Ana Guerrero Ollacarizqueta

Stephane Bart Pedersen

Athanasios Topaloudis

Introduction (recap)

2

• Request from LMC and Evian for a “postmortem button”– For any reason at any time, be able to record all data

usually recorded in postmortem.– There should be a way to trigger this from the CCC, or

from timing event. – Are there drawbacks (acquisition dead-time, limited

storage)?– The idea is to provide a list of what is easy/difficult,

free/expensive to the management– Example of use cases:

• 10 Hz oscillations (BPMs, diamond BLMs, BLMs)• What happens at the beginning of the ramp• Storing of ADT kick signals (not yet in postmortem)

Identifying PM-like LHC data available from BI systems – BITB 16/5/2019

Introduction

3

• Task– Identify LHC data available from BI systems

– With the view to acquiring from an on-demand trigger (MTG or soft)

• Issued by an LHC Operator or another intelligent source

• Only a few systems with interesting data at the TxT level– So extended this presentation to include lower

resolution data as well


How to Classify Different BI Data?

4

• Number of Monitors• Number of Samples• Sample Rate• Approximate Data Size• Maximum Triggering Frequency • Ad-hoc Triggering Possible? • Ad-hoc Triggering Allowed? • Triggered by Internal Analysis in FESA class? • Accessible via (RDA, SDDS, PM server,…)? • Users of the data• Notes


Main LHC BI Observables

5

• BLM • BPM

– Standard, Interlock & DOROS

• BBQ• BSRT• Orbit Feedback• BCT

– F & DC

• BRASLHC


BLM 1/5

6Identifying PM-like LHC data available from BI systems – BITB 16/5/2019

PostMortemData

Number of Monitors ~4’000

Description Post Mortem Buffers

Number of Samples (Main data) 25’600

Sample Rate (Main data) 40uS

Other Data Last 512 values for running sum 1.31s

Data Size 27 x 28Mb = 756 Mb

Maximum Triggering Frequency Every 2 minutes

Ad-hoc Triggering Possible? Yes

Ad-hoc Triggering Allowed? No

Triggered by Timing or RDA

Internal FESA analysis? No

Accessible via? RDA and PM Server

Users Post-Mortem Analysis

Notes Some limitations interacting with XPOC (shares buffers)

BLM 2/5


PostMortemExpertData


Description Complete Post Mortem buffers

Number of Samples (Main data) 43’690


Other Data No

Data Size 27 x 43Mb = 1.1Gb






Accessible via? NFS files

Users None

Notes Some limitations interacting with XPOC (shares buffers)

BLM 3/5


BeamDumpData1/2


Description XPOC data

Number of Samples (Main data) 200


Other Data No

Data Size 27 x 220K = 6Mb


Ad-hoc Triggering Possible? No


Triggered by Timing



Users LBDS

Notes Some limitations interacting with PM (shares buffers)

BLM 4/5


CaptureData (Study)


Description On demand capture data

Number of Samples (Main data) 10’240 (Limited from a possible 43’690)

Sample Rate (Main data) 80us

Other Data No

Data Size 27 x 541K = 14.6Mb



Ad-hoc Triggering Allowed? Yes unless being used by IQC



Accessible via? RDA and SDDS

Users UFO Buster

Notes Some limitations interacting with IQC (shares buffers)

BLM 5/5


CaptureData (IQC)


Description On demand IQC data


Sample Rate (Main data) 40us

Other Data No

Data Size 27 x 10Mb = 270Mb

Maximum Triggering Frequency Every 30 seconds


Ad-hoc Triggering Allowed? Yes



Accessible via? RDA and SDDS

Users IQC

Notes Some limitations interacting with Study (shares buffers)

BPM 1/4


PostMortemData (turn by turn)


Description Post Mortem buffer (turn by turn)


Sample Rate (Main data) Turn

Other Data Last 1024 values for average orbit H/V

Data Size ?



Ad-hoc Triggering Allowed? ?





Notes

BPM (2/4)


PostMortemData (orbit by orbit)


Description Post Mortem buffers (orbit by orbit)


Sample Rate (Main data) Orbits (spaced by 40msec)


Data Size ?








Notes

BPM (3/4)


XpocData


Description XPOC data for LBDS




Data Size ?








Notes

BPM (4/4)


CapturedData


Description Triggered capture data

Number of Samples (Main data) 512K

Sample Rate (Main data) Bunch by bunch

Other Data No

Data Size ?

Maximum Triggering Frequency Every minute





Accessible via? RDA, files

Users First turns, optics

Notes

BPM DOROS 1/2


PostMortemData

Number of Monitors ~110

Description PostMortem data arrays. Acquired at 25 Hz in circular buffers covering 2 min before

Post-Mortem and 8 sec after.

Number of Samples (Main data) 3200 samples per parameter per BPM

Sample Rate (Main data) 25 Hz

Other Data .rawValP .rawValN .jawPosP .jawPosN .sisPositions .absolutePositions

Data Size (8+1+4+4+4+4+4+4) x 3200 x 110 = 11.08 MBytes

Maximum Triggering Frequency Every 3 seconds when triggered by timing (TBC)

Ad-hoc Triggering Possible? Yes (TBC)

Ad-hoc Triggering Allowed? Yes (TBC)




Users ?

Notes

BPM DOROS 2/2


CaptureData

Number of Monitors ~110

Description On demand capture data:

-Orbit & oscillation data

Number of Samples (Main data) Oscillation: 132072

Orbit: 132072

Sample Rate (Main data) 25 Hz

Other Data Some configuration & status data

Data Size (4+4+4+4+4+4+4+4) * 132072 * 110 = 443.37 MBytes for all BPMs

Maximum Triggering Frequency No limit (TBC)




Internal FESA analysis? Only decimation

Accessible via? RDA ans SDDS (file created from Java application)

Users ?

Notes

BPM Interlock (1/5)


PostMortemData

Number of Monitors 8

Description Post Mortem Buffers (orbit and turn buffers)

Number of Samples (Main data) 4 x 1024

Sample Rate (Main data) Orbit and turn

Other Data Raw turn sum buffers

Data Size 2 x 160 Kb = 320 Kb

Maximum Triggering Frequency ??






Users Post-Mortem Analysis (LBDS --> BPMS)

Notes Needs to be reset manually

BPM Interlock (2/5)


XpocData


Description XPOC data



Other Data Raw XPOC buffers

Data Size 8 x 24K = 192K




Triggered by Timing



Users LBDS

Notes

BPM Interlock (3/5)


InterlockData (turn by turn)


Description Interlock Data



Other Data internal counters (error, alarm, status)

Data Size 8 x 30 Kb = 240 Kb



Ad-hoc Triggering Allowed? ?No




Users Experts (LBDS --> BPMSINT)

Notes The analysis of these data happen in the Expert GUI

BPM Interlock (4/5)


CaptureData


Description Raw Bunch by Bunch buffers (last 147 turns)


Sample Rate (Main data) 25ns

Other Data debug info

Data Size 8 x 4 Mb = 32 Mb


Ad-hoc Triggering Possible? ??

Ad-hoc Triggering Allowed? ??




Users Experts (LBDS --> BPMSDiag)

Notes The analysis of these data happen in the Expert GUI

BPM Interlock (5/5)


CaptureData


Description Bunch by Bunch diagnostics (last 147 turns)


Sample Rate (Main data) 25ns

Other Data thresholds in ADC and mm

Data Size 8 x 4 Mb = 32 Mb







Users Post-Mortem Analysis (LBDS --> BPMSDiagPos)

Notes There is no anaylis implemented yet

BBQ


PostMortemData


Description Post Mortem Buffers (orbit and turn buffers)

Number of Samples (Main data) 256K


Other Data None

Data Size ~32 Mb

Maximum Triggering Frequency 60 seconds






Users PM

Notes Raw Oscillation Data

Orbit Feedback


IqcAcquisition

Number of Monitors ~1’150 * 2 (H/V)

Description Last position data from BPMs for IQC


Sample Rate (Main data) 1 per second

Other Data BPM Status info from last second

Data Size 74Kb

Maximum Triggering Frequency Every second





Accessible via? RDA

Users IQC

Notes Also on logging DB

BCT (1/3) - BCTFVFC


PostMortemData


Description Post Mortem buffers


Sample Rate (Main data) 11KHz

Other Data No

Data Size ~120Kb

Maximum Triggering Frequency >5s




Internal FESA analysis? no

Accessible via? RDA and PM Servers

Users PM

Notes

BCT (2/3) - BCTFVFC


XPocAcquisition




Sample Rate (Main data) 11KHz

Other Data No

Data Size ~120Kb

Maximum Triggering Frequency >5s



Triggered by Timing


Accessible via? XPOC server

Users XPOC

Notes

BCT (3/3) - BCTDCLHC2


PostMortemData




Sample Rate (Main data) 50Hz

Other Data No

Data Size ~12Kb

Maximum Triggering Frequency >5



Triggered by Timing


Accessible via? PM Server

Users PM

Notes

BRASC


PostMortemData




Sample Rate (Main data) 40MHz

Other Data No

Data Size ~30Kb




Triggered by Timing



Users PM

Notes

BRASG


PostMortemData




Sample Rate (Main data) 40MHz

Other Data No

Data Size ~90Kb




Triggered by Timing



Users PM

Notes

A Comment

29

• “The data is already in logging so not interesting”– Is there not an interest to identify a time of

interest and package the same data as an event?

• The could be used as input to future machine learning ?

• BRAN, BSRT, …


Possible New Data for Run 3

30

• Orbit Feedback system– 25 Hz BPM data and status– Full frequency BBQ tunes (from all systems)– COD+QUAD deflection / status + current requests– As much history as you can consume

• BLM– 100 Hz data

• Already used in several cases (collimation feedback, loss-maps, …)

– Create a new Capture type (called CAPTURE)• Return all 43’690 80us samples

– Covering 3.4952 seconds – STUDY currently covers 0.8192 seconds

• With new f/w, MBLT means readout will be several times faster

• BBQ– Raw data for 10s of seconds on new MENA25 CPU?


lhc systems providing post-mortem dataidentifying pm-like lhc data available from bi systems –bitb...

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