LER thermal outgassing is back again with us Significant increase in East Diamond signal since May 12, ~3 pm due to thermal outgassing in two pumps VP3044,

Slides:

Advertisements

Similar presentations

1 Vacuum Pressure Calculations. 2 Vaccalc The program vaccalc was used for all calculations. The program required three pieces of information for each.

Advertisements

Calibration of the AJLC Annex Sunroom Model in Oberlin, Ohio Samina Ali, Kristin Braziunas, Lora DiFranco Systems Modeling Final Presentation Spring 2007.

IP angle scan Results Martin Simard Silke Nelson Mike Kelsey.

Examples of 1-Hour NO 2 and SO 2 Modeling William O’Sullivan Director, Division of Air Quality NJDEP June 14, 2011.

Heat Flow in Young Oceanic Crust: Is Earth’s Heat Flux 44 TW or 31 TW 2008 Joint Assembly, Ft. Lauderdale T21A-01, May 27, 2008 T-21A Thermotectonic Models.

Time 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year

The plot below shows residuals from a simple regression. What, if anything, is of greatest concerning about these residuals? (A) They exhibit heteroscedasticity.

29 April 2011Viereck: Space Weather Workshop 2011 The Recent Solar Minimum: How Low Was It? What Were The Consequences? Rodney Viereck NOAA Space Weather.

Weather Journal Warm-up. First Page Current Almanac Predictions for the area – Include predictions from both almanacs Predicted Reflection – Is there.

W. KozaneckiMDI meeting, 5 May 06 Slide 1 Online DCH background analysis  Compare on-line DCH background ratio to Martin's offline analysis  Can we identify.

W. KozaneckiMCC AP meeting, 8 Mar 07  MD goals  Experimental procedure  HER-only x & y scans + high-current extrapolation  [LER only X & y scans +

Initial rough Background comparisons between Run5 and Run 4 Guy Wormser LAL Orsay.

1 IR Vacuum M. Sullivan MAC Review Jan , 2006 M. Sullivan for the Machine Advisory Committee Review January 18-20, 2006 IR Vacuum.

Parasitic parametrization of LER, HER and Lumi sensitivty in Trickle injection mode Very simple idea: use the very different variation with time of HER.

IR2 Vacuum Status M. Sullivan for S. Ecklund, A Fisher, S. Novokhatski, F-J Decker, A. Kulikov, S. DeBarger, U. Wienands, S. Gierman, M. Petree, many BaBarians.

Topics from this weeks 2E34 meeting M. Weaver Jan 6, 2006.

MDI meeting, Nov First look at Transient Recorder data Livio Piemontese Stan Ecklund and Mark Petree have installed – in the IR2 alcove – a 32.

IR 2 Vacuum Update M. Sullivan for PEP-II team For the 2e34 meeting of Feb. 15, 2006.

W. KozaneckiMDI meeting, 9 Mar 07  MD goals  Experimental procedure  HER-only x & y scans + high-current extrapolation  [LER only X & y scans] + high-current.

UCSB Encapsulation Studies UC Santa Barbara Based upon a 6 week study by F. Garberson in collaboration with A. Affolder, J. Incandela, S. Kyre and many.

Deadtime Sensitivity Trigger rate varies over a wide range DCH quadrant 0 (upper east) drives high deadtime periods Do backgrounds target upper east DCH?

1 IR NEG heating M. Sullivan MAC Review Dec , 2004 M. Sullivan Machine Advisory Committee Review December 13-15, 2004 IR NEG Heating and Upgrade.

1 Lesson Other Types of Graphs. 2 Lesson Other Types of Graphs California Standards: Statistics, Data Analysis, and Probability 2.3 Analyze.

24 Hour Clock Grade 6 Math.

Measuring Time.

Present Perfect Versus Past Tense By: Buthaina Al-Othman Use present perfect to show that something is still true now. Ex:“My father has lived in Kuwait.

Short Range Correlations E07006 Run coordinator report SRC-E07006.pdf SRC-E07006.pptx.

Rydal Medical Practice Navigator report Harry Longman

MHD/Heat Transfer considerations for SiC FCI in DEMO and ITER Sergey Smolentsev DCLL Special Meeting at UCLA April 23-24, 2007.

Research into the effect of different latitudes on cosmic radiation using HiSPARC detectors BY PIP RUDGE.

3243 Fri 23 Nov Summary INJ-BPM-01: took 1 shot of data, just a reference to compare with previous recent shifts – Did not see a strong dominant 100 kHz.

Past simple / present perfect Past simple is used: Actions that finished in a definite time in the past I bought this car last week. To ask when? what.

Elapsed Time. Objectiv e Students will be able to determine elapsed time: across months using a calendar, by hours and half hours using a clock.

Hurricane Frequency and Sea Surface Temperature EAS 4803 Sheliza Bhanjee.

Business English Upper Intermediate U1S09 John Silberstein

Demand overall: change in 2012 week 27 is clear. 25% rise since mid 2012 to early 2013 is surprising. Has a change in list size made a difference? If the.

Mount St. Helen’s By: Stephanie Graves Mount St. Helen’s is located in the state of Washington.

The temperature was 45°F at 9:30 am and 65°F at 4:20 PM. The temperature decreased by about 3°F per hour until sunset at 6:20 PM. How much warmer was the.

August 4-5, 2004 PEP-II Post Run 4 Review 1 M. Sullivan PEP-II Post Run 4 Review August 4-5, 2004 IR Summary and Issues.

That’s Nice! But it is not Maintenance Excellence. Life Cycle Engineering The Nation’s Premier Provider of Maintenance Solutions.

M. WeaverB-Factory Operations Review April 24, 2006 BaBar Backgrounds Matt Weaver B-Factory Operations Review April 24, 2006.

WACH4 26/11/2002Julien Cogan CERN/EP/CMA-1- THERMAL STEPS ANALYSIS Goals & Means : –apply a “step function” on the cooling water –look at : APD response.

November 16-18, 2004 Belle High Luminosity Workshop 1 M. Sullivan High Luminosity workshop (HL6) November 16-18, 2004 IR Vacuum Summary and Issues.

or the most confusing tense you have ever tried to understand !

EXAMPLE OF REDUCED CRYOMODULE HEAT CAPACITY DUE TO HELIUM PRESSURE RETURN LEVELS 0L04 CASE HISTORY.

Heating and Outgassing from MKP- L Magnet M.J. Barnes & L. Sermeus Acknowledgements: M. Beck, H. Bartosik, G. Bregliozzi, C. Pasquino, G. Rumolo, L. Vega.

BELLE-BABAR template Guy Wormser LAL Orsay. Completing the template Very good response to my extra requests: thanks to everydoby! Now we can make direct.

LDR 531 Week 3 Summary R-531/LDR-531-Week-3-Summary For more details

Past simple / present perfect

Past simple / present perfect

Organoclay Cap Performance

Past and Present Perfect Tense

SIMPLE PAST TENSE vs PRESENT PERFECT TENSE

Machine Background Status & issues in BaBar/PEP-II

Dairy products. Dairy products Past Simple is used: Present Perfect is used: When she was young , she lived in a small flat. • to express.

Weekend Summary Squirted N2 at 3027 under various conditions

The Diurnal Temperature Range and its Recent Evolution

Trickle Background Investigation

LAND SURFACE AND AIR TEMPERATURE AT CLEAR AND OVERCAST SKIES

DIRC Background Status

Long term projections summary

To Do list, open items as of 10-Feb \ Study threshold dependence on bunch length (Just changed Vrf to 4.5.

Stability of Calibration Data

Present Progressive Vs. Present Perfect Progressive

Chapter 12 Historical forecasting techniques

Present Perfect Continuous

UNITS OF TIME QUESTIONS.

Presentation transcript:

LER thermal outgassing is back again with us Significant increase in East Diamond signal since May 12, ~3 pm due to thermal outgassing in two pumps VP3044, VGCC3027 Happened one day before the last LER current step (2400 mA on May 13) Due to HER current increased from 1.3A to 1.4A As in March, change associated with pressure AND sensitivity variations in these pumps Seen also in DCH and DRC

One month history of LER and Diamond East LER East Diam April 17 May 18 May 12

Extra heating due to HER increase (thanks to Witold for pinting this out!) HER increased from 1.3 to 1.4 A From 3 pm onwards

Pressure variations in VP3044 and VGCC3027 VP3044VGCC3027 VP3075 VP3147

Detailed history of May 12 LER VP3044 VGCC3027 East Diam Time in hours

Detailed history of May 13 LER VP3044 VGCC3027 East Diamond

Also affects DCH and DRC (not corrected for HER increase) DCH DIRC % One month History April 17_May 18

It is also thermal outgassing in DCH and DRC DCH DRC 0 Time in hours

More evidence that DCJ is outgassing and NOT neutrons LER/HER/ LUMI DCH Neutrons Diam East May 18 7 pm to 11 pm

Summary of May for DIAM E All variables normalized to 1 on MAY 18 0 am Time in hours DIAME LER VP3044 VGCC3027 HER

Summary for May 12-May 21 DIAME LER VP3044 VGCC3027 HER

Summary of May for DRC and DCH All variables normalized to 1 on MAY 18 0 am Time in hours LER VP3044 DRC0 DCH HER

Diamond East is perfectly described with two pumps vP3044 and VGCC3027 May 11 6 pm to Midnight Diam E VGCC3027 VP

After the start of outgassing May 13, 8 pm to Midnight Almost doubling of DIAME

Still true later on May 17 3am to Midnight

The coefficients, normalised to 1 on May 10 VP3044 VGCC3027 VP3075 VP3147 Days in May

Evolution of pressures and DIAM- E sensitivity coefficients SensorPressure change Coefficient change Total change VP3044X 1X2.5 VGCC3027X3.5X0.6X2.1 DiamEx1.65

Conclusion Significant increase (x1.65) of DIAME since May 12 due to thermal outagassing in VP3044 and VGCC3027 Caused by the HER current increase from 1.3A to 1.4A Affects also DCH and DRC Pressure AND sensitivity variation in both pumps –VP3044 sensitivity x 2.5 –VGCC3027 reduced by a factor 2 ! –Evidence of VP3044 pressure reduction with time Will be interesting to correlate with the many new temperature sensors

Pressure spike on May 22

Pressure spike on May 23

BABAR dead time driver

East Diamond recent week