MPD Provisional Cryogenic Component & Tasks

MPD provisional cryogenic component and tasks definition V. Benda

Main points and agreements On our last meeting 19 February it was proposed and approved the provisional solution of MPD shield cooling by LN2with a speed of 1K/h Final solution will be clarified later on, but The general strategy shall be approved in reasonable time in order to go from provisional to the final solution quickly and with minimum extra budget Official MPD Cryogenic working group was established . . . . MPD . . . . . . . . . . MPD . Regular meeting every second Wednesday at 15h in b.202 (at Slava) 02.07.2025 MPD components numbering 2

Provisional solution Components numbering LHe line #1 5 3 4 1 2 For the final solution one LN2tank can be removed while the second one can by filled by fixed LN2line from our LN2factory. EH MFS 6 02.07.2025 MPD components numbering 3

Provisional simplified scheme of LN2 Components numbering Cold GN2 To be used for shielding of LHe line #1 MPD control cryostat GN2 2 Satellite MPD magnet EH Heater 5kW LN2tanks MFS From CERN By-pass for LN2to be added 5kW 5 5a LN2 LN2filling 5 02.07.2025 MPD components numbering 4

Satellite/Control cryostat lines 2 9 6 5 7 1b 1a 3 8 11 10 02.07.2025 MPD components numbering 5

List of components and task description MPD provisional solution - List of components and tasks MPD provisional solution Procurement of components Name Number Description Responsible Date Note Priority 1) Writing technical specifications including planning! a. Description b. Table of basic parameters (L, P, dP, m, Qr) c. Calculation of main features (d) d. Safety analysis and SV/RD calculation e. Material and technology definition Tender a. Find/propose companies b. Follow up the production (design testing) c. Transport to JINR d. Procurement of the documentation and putting them on JINR server e. Transport to JINR Installation Testing in situ LN2 tank LHe tank Line 1a Line 1b Line 2 Line 3 Line 4 Line 5 Line 5a + CV MFS Line 6 & EH Line 7 & EH Line 8 Line 9 & EH Line 10w Line 11w Compressed air line Water line Power cables Signal cables CS racks 2 TS & tender 2 To sign agreement with Gelimash 1 Control cryostat/Satellite, LHe in, TS 1 Control cryostat/Satellite, cold GHe return, TS 1 Control cryostat/MFS, LN2 & GN2 in, TS 1 Fixed LHe tank/Satellite, LHe in, shielded by LN2, very small heat in-leak, TS 1 Mobile LHe tank/Fixed LHe tank, fast LHe transfer, TS 1 LN2 tank1 & LN2 tank2/Satellite and to MFS, LN2 in, part is flexible, TS 1 MFS LN2 by-pass, LN2 in, cryogenic valve included, TS 1 From CERN? 1 Satellite/out of building, LP GN2 at -200C return including el. Heater, TS 1 Satellite/ compressore, LP GHe at -20C return including el. heater, TS 1 Conrol cr./gasholder or atm., cold GHe recovery (after quench or loss of vacuum), including EH? and SV, TS Emeljanov 1 LP GN2 at -200C return including el. Heater/out of building, TS 1 Control cr. Current leads/warm He recovery, TS 1 Compressores/satellite, HP GHe at 300K, TS 1 For valves actuators including collector, TS 2 Cooling water for vacuum pump, Terminal definitions Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Benda Emeljanov Emeljanov Is it done? Is it done? LN2 shield 1 2) 1 Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov? Emeljanov? Emeljanov Emeljanov? Collector 3) 4) List of work MPD magnet Satelite Reqular meeting Minutes of the meet. Components position Components connection Process understanding Process analysis Control system Tests Spare parts & storage Service & upgrade Quality assurance Safety TS for LN2 test to be done, other work to be finished (documents, transport, installation, testing etc.) Test?, documents, transport, installation, test at situ For time being every 2 weeks on Wednesday at 15h in b.202 (Slava), presentations to the server Summary of our meetins, after approval to PMD cryoserver Proposal to be approved by Topilin and Slava Who will do it? Test to be done. Specification of the test to be prepared. Study of documents, clarification of questiones, list of main parameters including P & I diagrams Process understanding, TS for control system including P&I diagrams Based on the process analysis Pressure, leak and instrumentation tests,test procedure to be written, some extra equipmet is reqquired? Define, provide and store including storage organization required spare parts Service, repair, upgrade and finaly dismantling. Procedure including schedule and budget to be done Planning, quality, documentation General and specific (safety valves ) Emeljanov Emeljanov Benda Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov Marek? Emeljanov Emeljanov Emeljanov Emeljanov Emeljanov 1 1 0 02.07.2025 MPD components numbering 6

Preliminary risks estimations Insufficient resources Cryogenics Control system Paper work Technicians To be organize Planning including resources, responsible? MPD cryo-server to be established Documents to be organized (structure to be done) 02.07.2025 MPD components numbering 7

Satellit under cold test, photo Line 1a Line 1b Satellite Control cryostat 02.07.2025 MPD components numbering 8