1 BMS activities and brick maniupulation Short summary of 2008 activities and results Extraction and filling activities foreseen in 2009 Black CS extraction strategy D.Duchesneau LAPP, Annecy OPERA general meeting Mizunami January 20 th, 2009

2 Brick manipulation activities in 2008  End of initial loading on July 14 th 2008 with bricks in the detector The main achievements in 2008: now January 2007: start filling target July 2008 : end of filling target The BMS(Brick Manipulator System) one robot on each side of the detector bricks today  1.26 kton 6 m

3 Brick manipulation activities in 2008 The main achievements in 2008:  Brick Handling management via BMM tools extensively used successfully  From July 1 st to Dec. 31 st : 1479 bricks extracted following the brick finding requests  BMS extraction commissioned and running in production mode

4 Brick manipulation activities in 2008 Brick Handling management via BMM tools CS X-ray underground Cosmic exposure on surface Shielded area in Hall B

5 Brick Extraction status in 2008: Week : July 2nd – July 31 st CNGS events: 154 bricks Week 31-35: August 1 st – August 31 st CNGS events: 132 bricks Week 36-40: Sept. 1st – Sept. 30th CNGS events: 267 bricks Week 41-44: Oct. 1st – Oct. 31st CNGS events: 417 bricks Week 45-48: Nov. 1st – Nov. 30th CNGS events: 414 bricks Week 49-50: Dec. 1st – Dec. 14th CNGS events: 109 bricks. A number of 25 extraction/day is achievable in a regular way => it includes some recovery time for standard errors Total: 1493 bricks extracted for about 1700 events

6 BMS Machines: extraction and related problems For the 1493 extraction requests already treated, 3 really failed Extraction efficiency is then: ± 0.12 % 3 rows with candidate bricks inside are blocked. and are not yet recovered and no hope to easily recover them The target as of yesterday Those achievements were not done without pain:  BMS Extraction suffers from bad skates + glue + lost/destroyed CS cover  Unexpected and damaging LNGS power cuts on BMS systems and hardware + loss of BMM DB…  Hardware failures: motors, servo-control, vehicle, crashes due to external factors

7 Some numbers about brick handling activities The Brick X ray rate is identical to the CS scan result availability The ‘Sent to development’ is very close to the rate of cosmic pit delivery. Annual periodic effect BMS profibus network RS problem and VV tires BMS vehicle accident RS up to Dec. 15th BMS maintenance and RS VV mistuned

8 It was needed to add 4 additional shelves in Shielded area since the beginning: Storage capacity: 1000 bricks up to Dec. 15th # places on shelves

9 Work and planning organisation for the brick manipulation activities of  Extraction of the remaining CNGS brick candidate (1st and 2nd choice) about 625 in 2009  Extraction of bricks for CS doublet sheet replacement  Replacement of CS doublet sheets  Insertion of bricks with new CS doublet  Insertion of 4000 bricks from last BAM production  Re-insertion of about 650 bricks from CNGS back to the detector  Brick Handling of CNGS brick events

10 Schedule: There will never be mix of extraction of CNGS candidate with CS doublet exchange during shifts and even days; For similar reasons, we will not mix insertion and extraction for CSdoublet exchange during shifts and even days: separate days will be assigned to both activities. The extraction of candidate bricks can be envisaged on dedicated day/week only (possibly Monday during the 2 shifts only if drums are correctly handled). They will get highest priority during these activities. We start CS exchange beginning of February for 12 weeks with some periods devoted to extraction of 2nd brick (but absolutely not mixed as mentioned above). We fill the 4000 new bricks not later than 2 weeks before the start of CNGS using the 2 shift mode even if CS doublet exchange is not finished. They may also be inserted during insertion slots proposed in the following schedule. Brick manipulation activities in 2009 ‘theoretical’ upper limit achievable for the BMS if there is no major hardware failure during 2 shifts/day: BMS Insertion max. rate: 4500 bricks/week  4 drums/day BMS Extraction max. rate: 2/3 of insert rate = 3000 bricks/week

11 Week # in 2009CNGS extract candidate bricks Extract for CS treatment Brick insertionBricks on palette end of week (*) Trays to clean during weekend 3 (Jan 12 th -16 th )70 4 (Jan 19 th -23 th ) (Jan 16 th -30 th ) on Corridor 6 (Feb 2 nd -6 th )cancelled2400 (4days) (Feb 9 th -13 th )40 (1day)2400 (4days) (Feb 16 th -20 th )01200 (2days)2700 (3days) (Feb 23 rd -27 th )01800 (3days)1800 (2days) (Mar 2 nd -6 th )40 (1day)2400 (4days) (Mar 9 th -13 th )01800 (3days)1800 (2days) (Mar 16 th -20 th ) (1/2 prod) 13 (Mar23 rd -27 th )40 (1day) (Ma30 th -Apr3 rd )40 (1day) (Apr 6 th -10 th )01200 (2days)2700 (3 days) (Apr13 th -17 th )40 (1day) (end prod) 17 (Apr20 th -24 th )40 (1day)02200 (BAM prod RS)0 18 (Apr27 th -30 th ) cancelled ???) 40 (1day)1300 Rock side0 Total (*) in addition to the 4000 bricks sitting in Hall B which are produced by the BAM.

12 detector 4.1m6.8m2.7m door 2.7m 19 m drum 1.5m pall 1m table pall 1m fence 2 m 5 m pall 1m passage for pedestrians (>1.2m) about on scale rock of corridor side crane 5 ton crane 25 ton CS replacements layout (taken from Mario’s proposal) All the work of manipulation will be done in Hall C

13 Black CS extraction strategy: 2 groups have to be extracted:  The first bricks produced by the BAM for which there was no hole in the CS envelop: they will be easy to find as they were the first bricks loaded in the detector (Brick Id < 14400)  There are additional 4000 bricks for which there was a hole but stored during long time under vacuum. Those brick positions are not so sharply defined as in the first category. People interested should provide the Brick Ids to the BMS people asap. Extract the first group: concentrated mainly in SM1 bottom rows. The BMS will treat always complete rows of 26 bricks

14 To be careful: some rows contain good bricks or bricks which should not be treated: (0.3% candidate bricks and 0.6% not high fog bricks) : both types will be reinserted in the detector  However the priority will be given according to the rows where there is a maximum of CS to replace. We will use a BMM tool interface to the DB to do the bookkeeping of the extracted bricks (mandatory, about 10% of the target will come out) Activities foreseen on the working tables in Hall C: removal and replacement of the CS enveloppe the activity of replacing the sliding skates the perfect fixation of the CS cover to avoid the disastrous crashes we have presently on certain rows. the control of the brick shape and size in the special tunnel tool Black CS extraction strategy:

15 The END