october 2002 jean slaughter sda – shot data analysis outline description of sda examples plans for...
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October 2002Jean Slaughter
SDA – Shot Data Analysis
Outline
•Description of SDA
•Examples
•Plans for 2003
SDA is a system for acquiring and analyzing data from stores. It is complementary to specialstudies and the data loggers.
Version 10-15-02-1
October 2002Jean Slaughter
Schematic View of SDA
InstrumentsOther Devices
System of DA engines
Database
FilesEXCEL,
etc.Scalar, Plot
Viewers
User Programs(Java classes)
Servlets
Standard Plots, Tables,Store Checker
SDAEdit
October 2002Jean Slaughter
Inputs to SDA• Longitudinal, transverse emittances• Intensities, DC and bunched• Beam positions • Settings
– Magnets, collimators, etc.– Tunes, chromaticities
• Computed devices• Data from CDF, D0
– Luminosity– Losses– Beam position, size
October 2002Jean Slaughter
Tevatron HEP Collider State Diagram
Proton Inject’nporch
Proton Injectiontune up
Inject Protons
Eject Protons
Inject Pbars
PbarInjection
porch
BeforeRamp
Flattop
Acceleration
Squeeze InitiateCollisions
Remove Halo
HEP
Pause HEP
ProtonRemoval
Unsqueeze
Deceleration
Extractionporch
Extract Pbars
Cogging
Recovery
Ramping
Flattop2
Reset
Cases and Sets
36 sets p injection9 sets for pbar injectionset every 10 min - HEP
Not shown are MI, Pbar Source, Recycler States
October 2002Jean Slaughter
SDA Viewer WindowCase Unstack Pbars- Store 1843
October 2002Jean Slaughter
Pbar Bunch Intensities in MI before Transfer Case Inject Pbars - Store 1787
set number (transfer)
bunch intensity - 109
October 2002Jean Slaughter
MI Bunch Intensities After RF Compensation - Store 1836
Intensity 109
store:set (transfer)
October 2002Jean Slaughter
Snapshots and Fast Time Plots Capture High Frequency Data- (PlotViewer)
RF cavity phase, RF4 Cavity Volts
RF4 MI phase error, 53 MHZ
246 12 180 seconds
Accumulator RF During Unstacking
October 2002Jean Slaughter
Standard Plot for Pbar Intensities
October 2002Jean Slaughter
Store Checker• Purpose
– Monitor instrumentation and DAQ
– Monitor accelerator performance
• Checks SDA data for specified cases/sets
– Min < device value < max
– Min < ( difference in time of 2 devices ) < max
– Min < ( difference in value of 2 devices) < max
• Jobs run automatically every store
• “Standard” and “private” lists
• Results on WWW for “standard” list
• Lists on WWW
October 2002Jean Slaughter
Store Checker Results
When MiniBoone started running, errors were detected. B:CHGB had to be sampled and held at aa different time.
October 2002Jean Slaughter
Examples of User Analyses
• Emittances for stores 1300-1700• Calculated versus measured luminosity at CDF• Measured HEP pbar lifetime compared to lifetime
expected from interactions
October 2002Jean Slaughter
User Analysis Combining Many Stores
P. Derwent
October 2002Jean Slaughter
Measured Versus Computed Luminosity
P. Lebrun
October 2002Jean Slaughter
Measured Pbar Lifetime Versus Lifetime Due to Collisions - March
-5 0 5 10 15 20 25 30 35 40
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
assuming 70 mb X-section
Old Stores (Febr. , March 02)
Comparison between Measured Pbar lifetime and "burn rate" due to collision
Pb
ar
Lie
time
, HE
P (
ho
urs
)
Bunch Number
Life-1036 BurnRate-1036 Life-1043 BurnRate-1043
P. Lebrun
October 2002Jean Slaughter
-5 0 5 10 15 20 25 30 35 400
20
40
60
80
100
120
140
160
Pb
ar
Lie
time
, HE
P (
ho
urs
)
assuming 70 mb X-section
Recent Stores (Oct 02)
Comparison between Measured Pbar lifetime and "burn rate" due to collision
Bunch Number
Life-1832 BurnRate-1832 Life-1836 BurnRate-1836
Measured Pbar Lifetime Versus Lifetime Due to Collisions - October
P. Lebrun
October 2002Jean Slaughter
Jobs for 2003• Finish and then maintain SDA infrastructure
– Still some DAQ errors – More flexible user access to data– Physics classes in Java tool kit
• Finish reviewing inputs • Study instrumentation• Standard plots and tables
• Emittances• Automated shots log• Automated summary spreadsheets
• User requests and education• Long term archiving of (non-SDA) data logger data
October 2002Jean Slaughter
Ongoing Operations in 2003
• Dedicated analyses• Monitoring of SDA inputs
– Instrumentation problems– DAQ problems
• Monitoring of stores– Assimilating all the information– Group of physicists to review data and
follow up on what’s found
October 2002Jean Slaughter
SDA Team
• Controls Department– K. Cahill, B. Hendricks, M. McCusker, T.
Bolshakov• Computing Division
– P. Lebrun, S. Panacek, A. Kulyavtsev, N. Kouropatkine, R. Rechenmacher
• Systems Departments– E. Harms, J. Annala, D. Capista
• Headquarters– M. Church, J. Slaughter
October 2002Jean Slaughter
Summary
• SDA infrastructure should be complete in 6 months
• Shot analysis is a continuing part of operations
October 2002Jean Slaughter
Two Types of Data
• Lumberjack data– Fixed frequencies,
i.e. non-triggered– Used for studies– Circular buffers –
data is overwritten after 1-30 days
– Any user can modify any archive configuration
• SDA data– Triggered at
specific events– Only during stores– Permanent archive– Standard content
Backup Slide
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