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f
Shot Engineering
Accelerator Advisory CommitteeElvin Harms
Fermilab Beams Division
13 May 2002
13 May 02AAC
E. Harms2
fShot Engineering
• Introduction
• Planning & Scheduling
• Statistics
• Shot Set Up
• Analysis/SDA
• Summary
13 May 02AAC
E. Harms3
fIntroduction
• Integrated Luminosity– 31pb-1 since last meeting
• Peak Luminosity– Dec 01: 7.6 E30
– Now: 19.6 E30
• Store Reliability– 114 stores since 12/12/01
– 93 terminated intentionally: 81%
Luminosity Per Week Since 06/04/01
0.00
500.00
1000.00
1500.00
2000.00
2500.00
3000.00
3500.00
06/04
/01
06/25
/01
07/16
/01
08/06
/01
08/27
/01
09/17
/01
10/08
/01
10/29
/01
11/19
/01
12/10
/01
12/31
/01
01/21
/02
02/11
/02
03/04
/02
03/25
/02
04/15
/02
We
ek
ly In
teg
rate
d L
um
ino
sit
y (
nb
-1)
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
Ru
n In
teg
rate
d L
um
ino
sit
y (
pb
-1)
Weekly Luminosity Run Luminosity
13 May 02AAC
E. Harms4
fPlanning & Scheduling
• Collider Operation is our priority• Up to 5 shifts per week for Collider studies
– Dedicated Tevatron– Dedicated Pbar source– Studies pbars to Tevatron– Other machines as conditions permit
• Parasitic studies during remainder of week• Recycler commissioning
– Protons and Pbars
• MiniBooNe beam commissioning• Shutdowns as jobs accumulate or component failure
13 May 02AAC
E. Harms5
fOperations – Scheduling
Typical Schedule
13 May 02AAC
E. Harms6
fOperations - Planning
• 0900 meetings Monday, Wednesday, Friday– Review of performance– Set short-term schedule
• Department meetings– Topics of interest– Studies de-briefing– Studies planning
• Monday 1030 Studies Planning meeting– Input from systems departments– Integrate dedicated and parasitic studies– Prepare schedule for next week
• Thursday meeting– Run IIa topic– Shot analysis
13 May 02AAC
E. Harms7
fStatistics
• Store time
• Downtime
• Set-up time
• Compiled since last meeting– 12 December 01 through 10 May 02
13 May 02AAC
E. Harms8
fStatistics – Store time
• On average, 71 hours in store per week, 42.5% of week
• Peak is 110 hours
Store Hours Per Week Since 11/05/01
0.00 0.00 0.00
36.40
90.64
67.25
54.27
110.25
93.24
45.48
97.87
54.65
92.91
86.07
70.67
47.08
80.61
33.48
97.36
87.58
70.4766.10
45.11
35.39
83.8379.91
0.00
20.00
40.00
60.00
80.00
100.00
120.00
11/05/0111/19/0112/03/01 12/17/0112/31/01 01/14/0201/28/0202/11/02 02/25/0203/11/0203/25/02 04/08/0204/22/02
Inte
gra
ted S
tore
Hou
rs
13 May 02AAC
E. Harms9
fStatistics - Downtime
• On average, 45 hours, 26% of time each week, is accrued as downtime
– On average, 8% of each week is downtime due to a failure
– On average, 8% of each week is downtime identified as a scheduled shutdown
– Experimenter-requested accesses are not considered shutdowns, usually ‘miscellaneous’
• Convening a reliability group
Weekly Downtime Since 11/05/01
168.00168.00
79.00
13.753.75 2.00
8.50 8.00 3.50
37.75
0.00 5.5011.75
20.00
3.25
30.75
4.50
26.00
3.50 5.50 0.0012.50 16.50
85.50
11.25 8.75
0.00 0.00
28.00
12.25
5.50
31.5012.50 14.00
17.25
0.50
3.00
31.50
0.00
12.50
4.25
6.00
11.75
18.00
2.75 2.50 13.00
22.25
38.25
15.00
29.50
12.25
0.00 0.00
61.00
81.50
13.00
19.50
21.25
4.50 6.75
16.25
22.25
23.25
19.00
7.50
10.50
24.50
8.25
24.75
17.252.75
14.25
6.75
7.50
10.50
14.50
11.75
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
180.00
11/05/01 11/19/01 12/03/01 12/17/01 12/31/01 01/14/02 01/28/02 02/11/02 02/25/02 03/11/02 03/25/02 04/08/02 04/22/02
Dow
ntim
e (H
ours
)
Shutdown Component Failure Miscellaneous
13 May 02AAC
E. Harms10
fStatistics – Set-Up time
• Three hour shot set-ups are the average
• Two-hour set-ups recently
• 1-1/2 hours has been achieved and should be routine
• Identifying ‘slow’ steps
• Refining set-up technique
• Identify a realistic short-term goal
Store Set Up Time Since 12/03/01
1285
1287
1288
1280
1260
1258
1224
1217
1216
1182
1203
1207
1226
1229
1240
1242 12
4312
5312
57
11
7611
7411
7211
6911
541152
1150
1144
1142
1140
1137
1128
1126
1124
1122
1120
1116
1113
1095
1093
1091
1089
1084
1082
1080
107410
7210
7010
6610
6310
4810
4710
4510
4310
4010
381036
1023
101810
0210
2010
1310
0099
899
699
499
299
0
965
973
97196
996
7955
953950
948
942
940
934
933
93192
992
791
991
791
691
491
391
290
5903
900
88988
588
487
587
487
287
086
986
786
186
085
885
785
584
384
083
483
282
881
881
681
481
181
080
880
0
0.00
2.00
4.00
6.00
8.00
10.00
12.00
Store #
Set U
p Ti
me
(Hou
rs)
1178
13 May 02AAC
E. Harms11
fShot Set-Up
• Description
• Tools
• Recent Progress and Improvements
13 May 02AAC
E. Harms12
fShot Set-Up – Description
Tevatron
Proton source
Main InjectorRecycler
Antiproton source
13 May 02AAC
E. Harms13
fShot Set-Up – Description
Tevatron Main Injector Pbar sourceTerminate store &Return to 150 GeV
Check/correct closed orbit Cool Pbars into core & maintain stability
Verify/correct A150 line tune
Set tunes & chromaticities
Check/correct extraction positions
Optimize protons
Accept reverse protons, maximize transmission
from MI, minimize injection oscillations
Load protons Provide protons for tuneup of beam lines
Orient Accumulator for unstacking
13 May 02AAC
E. Harms14
fShot Set-Up – Description
Tevatron
Proton source
Main InjectorRecycler
Antiproton sourceAP3
P2
P1
AP1
A1
MI-8
13 May 02AAC
E. Harms15
fShot Set-Up – Tools
• Manpower– MCR crews are fully integrated
– Cross-training continues
– Machine experts present much of the time for dedicated tasks and monitoring
• Software– Sequencers
– State devices
– Specialized applications
13 May 02AAC
E. Harms16
fShot Set-Up – Recent Progress
• Improved Accumulator to MI beam lines lattice match
• Revised Unstacking Scheme• Pbar transfers to both Tevatron and
Recycler in same shot set-up• Tevatron tunes and chromaticity setting
at 150 GeV• MI coalescing improvements
13 May 02AAC
E. Harms17
fShot Set-Up – Improvements
• Decrease turn-around time– Track length of setup steps– Identify steps of concern– Apply fixes– Ongoing exercise
• Beam line tuning reproducibility• Tevatron octupole tune-up• Proton pulse to pulse stability • Pbars requested vs. unstacked• Optimization of input parameters
– MCR specification sheet• Close the loop
– Use previous stores to improve on future ones– SDA
13 May 02AAC
E. Harms18
fShot Analysis/SDA
• Introduction
• Data
• Status
13 May 02AAC
E. Harms19
fShot Analysis/SDA - Introduction
• SDA – The Shot Data Analysis (SDA) products are a set of complementary tools and application libraries intended for off-line studies of the Tevatron complex performance during RunII. Beam Physicists and Engineers can access the shot data from their workstations, using either a collection of Java-Based or Web based applications to plot and export flat data table (ASCII text) to other packages for further studies. We believe that this remote access and analysis of the beam data will be essential optimize and fine-tune our accelerators for RunII. This can only be accomplished via extensive studies of post-mortem dumps of the data, trending over significant periods, selection of particularly successful stores and so forth.
13 May 02AAC
E. Harms20
fShot Analysis/SDA - Introduction
• SDA Main Tools– SDA Editor to add, edit, delete input devices
• Devices can be sampled over time to generate time plot data
• Devices can be sampled on single ‘event’ to generate scalar data
– SDA Viewer to view scalar data information• Given most attention to date
– Plot Viewer to view plottable data• Needs more attention
• Off-line Analysis tools– data saved into ‘Shots’ and Tevatron electronic log books
– true off-line tools under development
13 May 02AAC
E. Harms21
fShot Analysis/SDA – Scalar Data
Sample Scalar data view for Pbars
13 May 02AAC
E. Harms22
fShot Analysis/SDA – Summary Report
ProtonIntensity E9
StepEfficiency%
CumulativeEfficiency%
PbarIntensityE9
StepEfficiency%
CumulativeEfficiency%
Accumulator 1026.00AP3 1016.56 99.08 99.08AP1 998.49 98.22 97.32P2 951.02 95.25 92.69P1 1022.25 107.49 99.63MI Inj 1123.51 109.91 109.50MI 8Gev 971.32 86.45 94.67MI 150Gev 1004.96 103.46 97.95Coalescing 9583.99 770.70 76.69 75.12Inject Protons 7823.90 77.84 77.84Pbar Injection porch 7713.03 98.58 80.48Inject Pbars 6605.13 85.64 68.92 688.10 89.28 67.07Before Ramp 6609.61 100.07 68.97 575.15 83.59 56.06Flattop 6345.75 96.01 66.21 513.86 89.34 50.08Squeeze 6211.13 97.88 64.81 498.35 96.98 48.57Initiate Collisions 6201.11 99.84 64.70 498.59 100.05 48.60Remove Halo 6070.53 97.89 63.34 487.87 97.85 47.55HEP 6095.33 100.41 63.60 484.70 99.35 47.24Initial Luminosity 20.24 CDF 18.61 DZeroShot Setup Time 135.22 min
13 May 02AAC
E. Harms23
fShot Analysis/SDA – Plots
Protons – 10 recent stores Pbars – 10 recent stores
13 May 02AAC
E. Harms24
fShot Analysis/SDA - Status
• Recent influx of manpower
• Bi-weekly infrastructure meetings/action list
• Generating useful data, but not complete
• Software platform stabilizing
• Hardware fairly stable
• Analysis in progress/just beginning
• Instrumentation needs work in some areas
• Need to build a larger user base
13 May 02AAC
E. Harms25
fShot Engineering - Summary
• Luminosity performance is improving• Planning/scheduling
– Mature– Flexibility is needed
• Reliability– Good– Needs proactive attention
• Shot Set-Up– Technique is mature– Evolving as necessary– Needs to go faster
• Shot analysis– Toddler stage– Tools maturing– Getting serious about analysis
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