W ARM MAGNETS COMMI SSI ONI NG POI NT 8 HARDWARE COMMISSIONING COORDINATION ♦ ♦ ♦ NEXT RAT m eeting W ednesday 2 3 .0 5 0 8 :3 0 in 9 3 6 / R-0 3 5 ♦ ♦ ♦ May 1 0 th , 2 0 0 7 Present: Maria Paz Casas Lino, Michel Condemine, Pierre Dahlen, Carlos Fernández, Nicolas Gilbert, Jacky Mazet, Ivan Moya, David Smekens, Hugues Thiesen, Jan Uythoven. Point 8 – Contact HCC person: María Paz Casas Lino / I ván Moya 1 . Status of non conform ities and actions to be taken: • Polarity test non conformities in the following circuits: (RMSI.R8B2; RQID.87900; RQID.88100; RQIF.87800: RQIF.88000 ) o Solved (Condamine) • Large inductive loops in MSI and some quadripoles and in MBIAH. o Solved (Condamine) • 8h run non conformity RBXWSH.L8: An intervention of TS/ CV is required to balance the cooling circuit. Nominal flow rate 20 l/ min. (EDMS: 829411) o Maria Paz Casas will contact TS/ CV • Power converter: MQIF87800 (3e-4 ripple). o It is agreed between AB/ PO (Hugues) and AB/ BT (Jan) that this non conformity will be fixed during the tests. 2 . Modifications to be done before starting the tests: • Adjustment of TI8 functions. It is required by AB/ PO to have the functions adjusted already at the beginning of the tests.
o Jan will contact Roger Genand to have the shape of the functions specified in detail and to the person in charge of implementing these modifications. 3 . Program m e to finish the w arm m agnets com m issioning steps: o WELQA,WIC, SETUP of PC already completed in the previous tests o Polarity test to be done in all the warm magnets TI2 LHC o 24h run to be done at I Injection 4 . I nterferences found at the com pensator m agnets o Description of the interferences and conditions during the previous tests (summarized in the presentation below). o Programme to evaluate and solve the interferences (see presentation below) 1. Evaluation of the interferences: I. Turn on ALL the PC of the warm magnets of TI8 (1 st evaluation) II. Turn off the PC on the 1 8 kV line . (2 nd evaluation) III. Conclusions 2. Solution implementation 3. Solution validation 5 . Tim e requirem ent and planning o See presentation below. Note that after the meeting the planning has been modified due to installation constraints. Activities start on Wednesday 23 rd May instead of Monday 21 st May 6 . Access restrictions o Warm magnets: Two panels will be placed close to the two access points from the UA27 to the RA27 preventing the access to the warm magnets in between but not to the rest of the RA87 and to the inner triplet. For the accessible warm magnets, signalization and flashing lights will be put in place. o Power converters: Fencing, signalization and flashing light. Maria Paz Casas Lino for the Hardw are Com m issioning Coordination
WARM MAGNETS COMMISSIONING POINT 8 II Agenda: 1. Non conformities to be solved and improvements to be done before starting the test. 2. Procedure to follow to finish the commissioning and to assess the reason and solution for the interferences found. 3. Planning and resources. 4. Security issues. 10/05/2007 TS/HDO
GROUPS INVOLVED � AB/PO (Hugues Thiesen / Roger Genand/ Stephen Riegner) � AT/MEL (Mikko Karppinen / David Smekens / Jacky Mazet) � AB/CO (Pierre Dahlen) � TS/EL (Jean Claude Guillaume / Michel Condamine / Baptiste Lebeau) � AB/BT (Jan Uythoven) � AB/ABP (Nicolas Gilbert) � AB/OP (Verena Kain, Jorg Wenninger, James Ridewood) � TS/HDO (Maria Paz Casas Lino, Ivan Moya) 2
PREVIOUS TEST: NON CONFORMITIES - IMPROVEMENTS MTF non conformities � POLARITY TEST: � RMSI.R8B2 : Might be re-cabled and will need to be checked again � RQID.87900 : Wrong labelling on cables � RQID.88100 : Might be re-cabled and will need to be checked again � RQIF.87800 : Wrong labelling on cables � RQIF.88000 : Might be re-cabled and will need to be checked again � 8H RUN NON CONFORMITY RBXWSH.L8 : Magnet Temperature raised to 58 C due too low flow rate. TS/CV to balance the cooling circuit. Nominal flow rate 20 l/min. (EDMS: 829411) Jan Uithoven presentation 30 March � POWER CONVERTER: MQIF87800 (3e-4 ripple) � TI8 MAGNETS FUNCTIONS: � Functions to be adjusted / smoothened, according to spec. Roger Genand. Timing of logging to coincide with exact extraction moment � Redo heat run during cold check out, with shorter cycle (around 8 s instead of 28 s) � MCIAV88115 /6/7 are pulsed, should run dc for required stability � LARGE INDUCTIVE LOOPS IN MSI AND SOME QUADRIPOLE CABLING � TEMPORAL WIC CABLE ? 3
PREVIOUS TEST: INTERFERENCES IN COMPENSATOR MAGNETS � CONDITIONS DURING THE PREVIOUS TEST: � COMPENSATORS RUNNING AT 7TeV SETTINGS INSTEAD OF AT INJECTION ENERGY (450 GeV) � NOT ALL TI8 PC WHERE POWERED DURING THE TEST. (upstream of TED 87765) [1.3 MVA vs 5.4 MVA] � MAIN REACTIVE COMPENSATORS AT POINT 8 NOT OPERATIONAL � INTERFERENCES IN THE COMPENSATORS MORE IMPORTANT AT MBXWS (40 mH) than the MBXWH (160 mH) 4
LHC Compensators - Performance � Interference with the TI 8 power converters � Graphs for compensators running at 7 TeV settings RBXWSH.R8 End of 200 mApp ramp up 20 mA peak-peak ramp up Start of ramp down Without TI8 (end) With TI8 (end) Specification is 20 ppm = 16 mA peak - peak 5 ICC, 30 March 2007 Jan Uythoven, AB /BT
Interference with TI 8 Power Converters � More important for RBXWSH.R8 than RBXWHX.L8 With TI8 (end) 200 mApp 25 mApp About OK Not OK RBXWH.L8 RBXWSH.R8 (145 mH, 82 m Ω ) (40 mH, 62 m Ω ) 6 ICC, 30 March 2007 Jan Uythoven, AB /BT
PROGRAMME PROPOSAL 1. COMPLETE THE WARM MAGNETS COMMISSIONING AT POINT 8 � POLARITY CHECK (ALL WARM MAGNETS?) � 24H RUN (I INJECTION) 2. UNDERSTANDAND AND EVALUATE THE INTERFERENCES OF TI8 PC IN COMPENSATORS PC � TURN ON ALL TI8 WARM MAGNETS PC (1st EVALUATION) � TURN OFF TI8 WARM MAGNET PC 18 KV ( 2nd EVALUATION) � CONCLUSIONS 3. LOOK FOR A SOLUTION 4. VALIDATE SOLUTION??? (If we have time) 7
TIME REQUIREMENTS � POWER CONVERTERS IST COMPLETION � WELQA STEPS DONE. 0 DAYS � WIC � WIC PC WARM MAGNETS � SETUP WARM CIRCUITS COMMISSINIG � POINT 8 WARM CIRCUIT POLARITY TEST � 0.5 DAYS � WARM CIRCUIT HEAT RUN � 1 DAYS COMPENSATOR INTERFERENCES � INTERFERENCES 1st EVALUATION � 2 DAYS � INTERFERENCES 2nd EVALUATION � UNDERSTANDING 2 DAYS � SOLUTION IMPLEMENTATION � ? DAYS AND SOLUTION � SOLUTION VALIDATION � ? DAYS POINT 8 8
PLANNING ID Task Name Duration May '07 14 May '07 21 May '07 28 May '07 04 Jun '07 T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W 1 PREPARATION TO TE 7 days 11/05 AB/PO, TS/EL, AB/BT 2 POLARITY TEST 0,5 days 23/05 AB/PO, AT/MEL 3 HEAT RUN 1 day 23/05 AB/PO, AB/CO, AT/MEL, TS/EL 4 INTERFERENCES 1st 2 days 24/05 AB/PO, AB/BT EVALUATION 5 INTERFERENCES 2nd 2 days 29/05 AB/PO, AB/BT EVALUATION 6 SOLUTION 1 day IMPLEMENTATION 31/05 AB/PO, ? 7 SOLUTION VALIDATIO 0,5 days 01/06 AB/PO, ? 9
ACCESS RESTRICTIONS � During the whole tests: � Fencing, signalization and flashing lights at the Power Converters level � Panels forbidding the access to the magnets in the RA87 between the two access from the UA87 � Fencing, signalization and flashing lights for the rest of the warm magnets 10
Warm magnet circuits at point 8 AC Warm magnet circuits at point 8 AC network network 18 kV 40 MVA 2 MVA (Zo ≈ 7%) 400 V LHC TI8 TI8 0.3 MVA 1.8 MVA 3.6 MVA (DC) (pulsed) (pulsed) Interferences 1st evaluation 11 Interferences 2nd evaluation
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