BMS report u BMS hardware and software finalization
BMS report u. BMS hardware and software finalization Drums and drum transportation n Wall cleaning, safety items n Software development periods n Progress: security, filling speed improvements n u. BMS operation Brick extractions n Detector filling vs. brick production, plans n BMS co-project leader: D. Duchesneau GS operation leader: D. Biaré Other team members: M. Besnier, J. Favier, L. Fournier, J. Jacquemier, T. Le Flour, S. Lieunard, I. Monteiro, A. Zghiche and Byung Do Park Maiori, June 4 th , 2007 OPERA Collaboration Meeting H. Pessard 1
Additional baskets, BAM-BMS buffer Basket present situation: 6 baskets As there is always 2 baskets busy at BMS and one at BAM, buffer is 3 baskets, i. e. 1. 5 days at present. Need to increase this buffer 30 K€ registered in CF to build additional baskets Offer from Tecno. Cut received last month much less expansive than LAPP offer (including assembly work): 7. 5 K€ per drum (w/o tax) Delivery time also competitive. Delivery end July for order passed in France ~ June 10 th (after administrative delay) Number of drums to order in June to be discussed Note: basket mini-trays being glued for safer basket filling Maiori, June 4 th , 2007 OPERA Collaboration Meeting 2
Baskets transport & deposition on LS Manipulation of drums by TCS team, including deposition on LS. Efforts to gain time: filled baskets are transported from Hall B to Hall C when ready. Deposition on LS possibly de-synchronized. Problem: availability of TCS personnel after 17: 00 for drum deposition. Need additional agreement for transport at ~end of second BAM shift Future: BMS operators could also participate (with official authorization). Maiori, June 4 th , 2007 OPERA Collaboration Meeting 3
Target cleaning Tray cleaning: debris fell inside walls an trays became very dirty since September 2006. A new cleaning is needed. Second phase of cleaning is starting during week-ends - first round on June 2 nd: goal 15 drums equiv. , one 8 h shift to assess time needed (25 OK!) - procedure: clean next rows to be filled, i. e. about three upper layers. How to avoid that debris fall on lower bricks? - warning: this is less than 2 weeks provision and June 8 th is reserved Maiori, June 4 th , 2007 OPERA Collaboration Meeting 4
TT super-covers junctions: again Target preparation: a campaign was conducted by the TT team to improve vertical junctions between super-covers, using scotch tape. This has been effective in most of the cases, but has failed in one case/54 Maiori, June 4 th , 2007 OPERA Collaboration Meeting 5
TT super-cover incident In the future: there are still very critical situations in upper rows. A new survey should be done and corrections applied (clamps? ) BMS bridge was damaged Maiori, June 4 th , 2007 OPERA Collaboration Meeting 6
BMS protection Request for protection against debris falling from corridor balcony: was done only above the magnets (LS), not above BMS itself ! June 2007 February 2007 Maiori, June 4 th , 2007 OPERA Collaboration Meeting 7
BMS operators safety SAFETY: A safe platform for operators working on drum exchange should be realized. Under design. Maiori, June 4 th , 2007 OPERA Collaboration Meeting 8
Tray repairs: 7 more trays found damaged (curved) Complete list of tilted and damaged trays will be provided by Jean. A campaign of repairs has to be organized with minimal interference with detector filling (on week-ends? ) Example: CS Wall 12 R 8 Alberto has produced a new tool to correct inverted trays. Samples should be tested to check that both digital positioning BMS camera and accosting bridge sensors will work. Maiori, June 4 th , 2007 OPERA Collaboration Meeting 9
Excessive tray tilts and ‘Inverted’ trays in SM 1 (Jean’s previous list) Corridor side: W 11 r 1: -0. 9 o W 17 r(1, 5, 12, 17, 18): >-0. 7 Inverted slits: W 15 r 7 W 21 r 15 W 21 r 19 These trays (and trays just below for tilted ones) are presently inhibited Rock side: W 7 r 32: 0. 7 W 7 r 33: 0. 78 W 12 r 50: 0. 7 W 13 r 38: 0. 78 W 28 r 1: -0. 72 W 31 r 32: -0. 88 Inverted slits: W 18 r 12 W 25 r 6 Maiori, June 4 th , 2007 Recall: worst tilt, 2. 15 o, was perfectly repaired by T. Napolitano. Other tilts should be cured whenever possible. OPERA Collaboration Meeting 10
Rock side floor project • New floor rock: • height should not exceed 32 cm (grey beam) • 28 m long +7 m ramp max width ~ 3. 0 m • 1 -2 weeks installation, date, interference with operation ? Can make easier the progression of drum to LS rock 320 max 850 min • Alternative for SM 2 filling: deliver drums from the rear • after ~complete filling of SM 1 (+install. SM 2 bottom rail) • change paranco orientation to rear (under study) • should be carefully studied and tested (dev. time needed) No gain before SM 1 is filled: very long Z moves for each row 25/1/07 M. Spinetti 11
Wall ribbon elongation, new worry? Wall loading effect on the vertical elongation was computed long time ago to be of order 6 -7 mm for 64 rows loaded Measurements were taken wrt initial BMS Y position to reach rows: Ex. Wall 4 rock, tray 10 - no load: -4. 40 mm - 4 rows loaded: -5. 40 mm - 15 rows loaded: -8. 00 mm Syst. uncertainty ~0. 4 mm Extrapolation gives ~ 15 mm for 64 rows! Maiori, June 4 th , 2007 Checks should be done (Alberto and wall team, Dario geometry) OPERA Collaboration Meeting 12
Wall ribbon elongation Add. rows 14 12 10 8 6 4 2 0 Corridor side 3. 5 3. 0 2. 5 2. 0 1. 5 1. 0 0. 5 0. 0 Additional elongation (mm) All corrections to initial computed position are recorded since March 07, so more statistics are available. Dominique’s study above confirms the trend. Maiori, June 4 th , 2007 OPERA Collaboration Meeting 13
Software development Present versions of BMM and Supervisor software -Insertion well under control -Extraction schemes should be tested and finalized including failure recovery Problem to solve: holes in BMM database created by doublets. Curing the situation has been delayed to ‘later’. Extractions should be done. Time is needed. Automatism software -many progress, fine tuning -acceleration of speed and safety improvements demand R&D periods Maiori, June 4 th , 2007 Rock LS jack damaged: only ~2 days lost, as spare was available This accident could have been avoided. Crucial need for development periods OPERA Collaboration Meeting 14
BMS development periods 3 -day development periods (Thurs. to Saturday) requested every 5 -6 weeks -Tests of extraction scheme (BMM and Supervision) -Automatism: improvement of safety for some moves (forbid cross-moves) -Automatism: increase of detector filling speed First period: On 26 -27 -28 th of April -basic extraction version tested, some problems experienced in failures being solved -definite progress in filling speed -Securing moves: was implemented on corridor side only by lack of time, on rock side only after the accident. (only automatic mode up to now) Maiori, June 4 th , 2007 Next development period (to complete the above points) is this week June 7 -8 -9 th OPERA Collaboration Meeting 15
Filling rate progress Room for improvement: – unnecessary tempos suppressed - operations performed in masked time (M-code reading and others) - speed of individual moves: very effective gain in acceleration of jack returns, optimized speed profile when pushing bricks with jacks, etc. I. Monteiro impressive results: >20% overall time gain obtained, auto mode safety improvements Further tests/study periods of few days will be needed. Maiori, June 4 th , 2007 With limited number of failures and reduced transition times, insertion of 3 drums/day seems already quite reachable OPERA Collaboration Meeting 16
BMS brick row insertion total SERVICE Other gain possible 5’ 2 -3’ Repeated missions where most time can be gained Jack return still to optimize 21’ 19’ 16’ 21’ 13’ 12’ Total time =52: 01 Starting value 52’ 41’ 34’ Some gain possible in accosting Missions with brick manipulation = ~82 % of time (depending on insertion position) 07/01/2022 17
Brick extractions Since April development period, 2 weeks with combined detector filling and extraction of 37 bricks: 1) Week 19 (7 -11 May) Total 15 golden and 5 silver cands. extracted, with diff. schemes, - 1 brick/ service - 2, 3 bricks/ service - Some difficulties: painful nonautomatic recoveries -Back to primitive method of emptying full row in basket and reinserting it (~2 hrs) 2) Week 21 (21 -25 May) -Difficulties in accosting LS with filled carrousel, doublet ‘hole’ -Total: 13 gold extracted, 6 cs 7 rs, and 17 other candidates. Maiori, June 4 th , 2007 Extraction this summer hoped to be much faster: efficient collection of bricks before returning to basket. Next extractions in June after 2 nd dev. period OPERA Collaboration Meeting 18
BMS detector filling in last weeks Very large progress both in brick quality and brick quality control at BAM and in BMS reliability (several problems clarified and solved) Absolute filling speed improved Beginning to feel clearly the effect of non optimized transitions: -Waiting for drum installation -Drum checks -Wall tray scan checks Maiori, June 4 th , 2007 Still occur unfortunately: - doublets … (epidemic crises) is worst problem - A few other problems, see next OPERA Collaboration Meeting 19
BMS detector filling Rates above 2 drums/week recorded continuously in weeks 20 -21 Still occur also: - bricks without codes - Al tape repairs to reprint M -codes often very bad - few problems with CSboxes No more oversized bricks (use of gabarit is now effective) Maiori, June 4 th , 2007 OPERA Collaboration Meeting 20
Skate discussion (continued? ) - Several accidents inserting a row, due to skates detached from brick or skates leaving glue on BMS bridges and carrousel. Large improvements in BMS tuning and in skates (wrt old style Teflon skates), but present skates are fragile and some time leave glue on the platform, creating potential danger. More reflexion on skates? Maiori, June 4 th , 2007 OPERA Collaboration Meeting 21
Planned WEEK 20 6 h 00 8 h 30 14 h 00 Rock side repairs Realized WEEK 20 May 14 th to May 18 th 18 h 30 22 h 00 6 h 00 8 h 30 and tests 14 h 00 Rock side repairs CS B CS A 18 h 30 and tests C 2 5 r RS A) C 3 R 1 7 r tests 22 h 00 R 2 Finish drum CS B CS C RS B C 3 C 1 R 2 R 3 2 r Finish drum CS C CS A C 2 RS C RS A CS B RS A R 3 C 3 RS B C 2 R 2 7 r C 3 C 1 5 r R 2 2 r To complete later CS C 2 BMS in parallel 07/01/2022 1 BMS with 1 shifter C 1 4 r C 2 5 r 2 BMS in parallel 1 BMS with 1 shifter RS Monday 14 CS RS Tuesd 15 CS RS Wednes 16 CS RS Thursday 17 CS RS Friday 18 CS drum 22 change
Detector filling situation as of last Friday 38 rows with ‘holes’, 12 part. fill - We are now filling high rows where interventions become difficult, so we must be very careful in all preliminary checks Rate increases should not be done at price of less quality checks Maiori, June 4 th , 2007 OPERA Collaboration Meeting 23
Daily rate since beginning of May Maiori, June 4 th , 2007 OPERA Collaboration Meeting 24
Integral rate since beginning of May Maiori, June 4 th , 2007 OPERA Collaboration Meeting 25
Integral rate since 1/01/2007 Maiori, June 4 th , 2007 OPERA Collaboration Meeting 26
Daily rate since 1/10/2006 Maiori, June 4 th , 2007 OPERA Collaboration Meeting 27
Planning 2007 2 nd trim. WEEK Activity Corridor Activity Rock Operat. 14 2 -6 april Filling 15 9 -13 april Filling 16 16 -20 apr Filling 17 23 -27 apr Filling 18 30 a-4 may Filling 19 7 -11 may Filling/extr 20 14 -18 may Filling 21 21 -25 may Filling/extr 22 28 m-1 jun Filling 23 4 -8 jun Filling Sh. 24 11 -15 jun Filling Sh. 25 18 -22 jun Filling Sh. 26 25 -29 jun Filling Sh. Maiori, June 4 th , 2007 Autom. OPERA Collaboration Meeting Infor. Phys. 28
Tentative planning 2007 3 rd trim. WEEK Activity Corridor Activity Rock Operators 27 2 -6 jul Filling Sh. 28 9 -13 jul Filling Sh. 29 16 -20 jul Filling Sh Sh. 30 23 -27 jul Filling Sh. 31 30 j-3 aug Filling Sh. 32 6 -10 aug Filling Sh. 33 13 -17 aug Filling Sh. 34 20 -24 aug Filling Sh. 35 27 -31 aug Filling Sh. 36 3 -7 sept Filling/extr Filling/ext Sh. 37 10 -14 sep Filling/extr Filling/ext Sh. 38 17 -21 sep Filling/extr Filling/ext Sh. 39 24 -28 th sep Filling/extr Filling/ext Sh. Maiori, June 4 , 2007 Autom. OPERA Collaboration Meeting Infor. Phys. 29
BMS operation staff GS operation leader: D. Biaré, permanent at LNGS. LAPP will provide: - 3 people June to mid July need for a 1 st external BMS shifter/operator beg. of June week 23 - 2 people mid July to Sept. 1 st need for 2 nd external BMS shifter/operator starting mid July week 29 (>July 15 th) - 3 people in September to start the physics run 2 external operators continuously needed Maiori, June 4 th , 2007 External BMS shifter/operators - Nagoya post-doc has arrived - Art. 2222 hiring for 2 nd op. Call for shifters in OPERA in case not possible for mid-July OPERA Collaboration Meeting 30
The end Maiori, June 4 th , 2007 OPERA Collaboration Meeting 31
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