MPDNICA TPC status 30 01 2020 TPC parameters

MPD/NICA TPC status (30. 01. 2020) • TPC parameters • TPC cylinders • ROC chambers • front end electronics • gas, cooling, laser and SC systems • cabling and tubing • integration TPC to MPD • time schedule Presented by Sergey Movchan JINR team: 24 persons Belarus: 6 persons (INP BSU- ARTMASH: K. Afanasiev, V. Baev, Yu. Fedotova A. Litomin, S. Savitskiy, V. Tchekhovskiy) 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 1

MPD TPC parameters Item Length of the TPC Outer radius of vessel Inner radius of vessel Outer radius of the drift volume Inner radius of the drift volume Length of the drift volume HV electrode Electric field strength Magnetic field strength Drift gas Gas amplification factor TPC TDR – http: //mpd. jinr. ru/wpcontent/uploads/2019/01/Tpc. Tdr-v 07. pdf 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 Dimension 340 cm 140 cm 27 cm 133 cm 34 cm 170 cm (of each half) Membrane at the center of the TPC ~140 V/cm; 0. 5 Tesla 90% Ar+10% Methane, Atmospheric pres. + 2 mbar ~ 104 Drift velocity Drift time Temperature stability Number of readout chambers Segmentation in φ Pad size Number of pads Pad raw numbers Pad numbers after zero suppression Maximal event rate Electronics shaping time 5. 45 cm/µs; < 30µs; < 0. 5°C 24 (12 per each end-plate) Signal-to-noise ratio Signal dynamical range 30: 1 10 bits Sampling rate Sampling depth 10 MHz 310 time buckets 30° 5 x 12 mm 2 and 5 x 18 mm 2 95232 53 < 10% < 7 k. Hz ( Lum. 1027 ) ~180 ns (FWHM) 2

ROC chamber: pad plane 2 parts Pads capacitor measurement 10 serial sets with soldered connectors - delivered Jan 2020 (connectivity test - in progress) Next (last) 15 pc serial pad planes - ordered 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 3

TPC and ROCs: status 26 pc ROC frames - in stock 10 pc ROCs tested 03 -Mar-21 ROC cleaning procedure - ready C 3 -C 4 gluing – will be finished Feb 07 2020 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 4

TPC and ROCs: summary TPC assembly: field cage rods (30 pc + 30 pc) field cage mylar strips manufacture flanges finishing (add holes and grooves) C 3 - C 4 gluing C 1 - C 2 gluing start of TPC internal structure ass. ROC chambers: serial ROC chambers manufacture frames (26 pc) serial pad planes (20 pc ready) HV for ROC gate electrode test chamber with 2048 ch r/o system - in manufacture - Feb 2020 - will be finished Feb 07 2020 - Feb 2020 - Dec 2019 -> Jan 2020 -> March 2020 - in schedule (10 pc tested) - ready – last 15 pc ordered – design started, in progress – Sept 2019 -> Nov 2019 -> Feb 2020 TPC transportation platform and manipulator for ROC chamber installation - ready 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 5

TPC electronics requirements Data rates: - trigger mode – 20 GByte/sec (N=1000 tracks) - continuous readout mode - 300 GByte/sec Particle fluence for R=35 cm & 10 years (Oct 2019 update): neutrons + protons – 10**11 p/cm 2 per year e- & e+ - 2 x 10**10 p/cm 2 per year ions 10** 5 p/cm 2 per year Dose: Expected dose - 2 k. Rad per 10 years 28 nm): 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 6

TPC electronics: FE cards ENC ~ 0. 8 ADC (~ 500 e-) T SAMPA = 57 degree T FPGA = 54 degree Board LV: 1. 7 V & 1. 1 V SAMPA (2 pc): 1. 25 V/500 m. A FPGA: 1. 1 V/10 m. A (stand by mode) Status: in progress 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 7

TPC electronics: status SAMPA chips (4500 pc) delivered to JINR - June 2019 Pilot system – 512 ch tests with FPGA Arria 10 – in progress Status: tested 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, system February 04 2020 Readout based on 8 kits commercial

TPC electronics: status and schedule Test bench 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 9

TPC electronics: FE cards integration and cooling 2 radiators (narrow and wide) FE cards – no individual cooling Status: in progress 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 10

INP BSU (Minsk): TPC LV system LVDB mass-production (60 pc) - done Ok! LV system based on CAEN rad. hard design: (up to 2000 Gauss and 15 k. Rad) - power converters A 3486 AC/DC (380 V -> 48 V) - CAEN EASY 3000 system - LV module - A 3100 B (2÷ 7 V/100 A) Status: - test system – ordered, delivery time – May 2020 - invoice for full system - got, delivery time – (270÷ 300) days LV cables (halogen free, low smoke): S=50 mm 2 – delivered to JINR Dec 2019 S=120 mm 2 – delivered to JINR Dec 2019 in progress … Team for cabling – looking … 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 11

TPC gas system Racks Gas supply Status - commissioning in progress TPC volume imitator Status - commissioned (Bld. 217) paper flow - in progress … 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 12

TPC cooling system Barrel part – shorter and fixed to TPC 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 13

TPC cooling system: tubes layout and set of thermal panel prototypes Service wheel Tubes layout prototyping Status - in progress 03 -Mar-21 S. Movchan Al plate – 2 x 1 mm tube 04 - D=8/6 MPD/NICA TPC status for DAC, Dubna, Al February 2020 mm 14

TPC laser calibration system ½ TPC micro-mirror bundles Laser “planes” – 4+4 Points per plane - 4 Beams per point – 7 Laser “tracks”, N - 224 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 15

TPC laser calibration system Semi transparency mirror & prism • full set of micro-mirror bundles - assembled • 2 lasers (special option) – commissioned • laser beam splitter - delivered to JINR • laser beam monitors - prototype under tests 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 16

TPC laser calibration system: laser beams layout TPC TOF FHCAL laser beam layout – under finalization 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 17

TPC slow control : sub-systems status LV system: 1) CAEN EASY 3000 (crate SY 4527 (2 pc), crate EASY 3000 (12 pc), module A 3486 AC/DC (400 V) converter (13 pс), module PS A 3100 B (55 pc) + software GECO 2020 - ok! 2) Custom made stabilizers (module LVN 9 (48 pc-ok)) + crate 6 U (1 pc), custom control units (12 pc) + crate controller (1 pc)+ PC) + custom software – prototype tests in progress HV system: 1) MWPC: CAEN (crate SY 4527 -2 pc + modules A 7236 DN -3. 5 k. V/1. 5 m. A, A 7236 DP +3. 5 k. V/1. 5 m. A, A 1542 HDN -500 V/1 m. A ) + software GECO 2020 - ok! 2) TPC HV electrode (- 30 k. V): Iseg HV PS + Iseg software – ordering 3) HV for ROC gate: custom made system (crate – 2 pc, modules – 24 pc, crate controller- 2 pc) + custom software - NO DAQ: Hardware: FEC 64 (1488 pc), ROC controller (24 pc), data server (24 pc) + TPC team firmware and software – in progress Trigger ? ? ? … Synchronization ? ? ? … Clock ? ? ? … 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 18

TPC slow control : SC Gas system: Hardware: DAQ 32 module + custom software + PC (PNPI, Gatchina) – ok! Cooling system: Hardware: NI (national instruments (crate + ADCs) + 75 channels for hitters control + thermo sensors (100 pc)) + custom software - started Laser system: Hardware: PC (1 pc), industrial PC (2 pc), controllers (2 pc), cooling system (2 pc), UV laser (2 pc), synchronization module (1 pc) + laser producer software – not started yet 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 19

TPC: cables and tubes integration Optimization - in progress 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 20

TPC: trays in progress … 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 21

TPC services: status LV system: serial LVDB (60 pc) serial LVDB cooling plate CAEN EASY 3000 LV system LV power cables patch-panels HV system: CAEN EASY 3000 HV system HV cables – delivered to JINR - test system ordered, full system - invoice got – delivered to JINR - under discussion - invoice got - will be ordered, delivery June 2020 Gas system: - equipment - commissioned - commissioning of cryogenic vessels for Ar and N 2 - paper flow in progress Cooling system: FE cooling prototypes testes and measurements with prototype barrel and end cap thermal panels (full set) service wheel cooling tubes routine optimization FE cooling radiators mass-production 03 -Mar-21 – ordered, one manufactured – in progress – delivered - in progress - Sept 2020 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 22 -

TPC services: status (continue) Laser calibration system: lasers (2 pc) laser beam splitter beam monitors (WEB cameras + optics ) channels for laser beams inside MPD - commissioned - delivered - prototype tests, design in progress – under finalization Slow control system (software): LV system – more less ok! HV for ROC gate – on critical path DAQ – in progress Gas system – ok! Cooling system – started Laser system – not started yet 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 23

TPC services: status (continue) INTEGRATION: TPC sub-systems integration list of TPC cables and pipes electronics platform (TPC racks) trays (cables and pipes) - in good shape – updated - started Integration TPC into MPD – not started yet (waiting for final ECAL design and start sub-detectors integration to MPD) Tooling for installation TPC into MPD - not started yet 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 24

Time schedule 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 25

Thank you for attention! http: //nica. jinr. ru/ http: //mpd. jinr. ru/ TDR TPC – http: //mpd. jinr. ru/wpcontent/uploads/2019/01/Tpc. Tdr-v 07. pdf 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 26

SPARE 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 27

dark current, n. A ROC chamber: test results 4. 5 4 3. 5 3 2. 5 2 1. 5 1 0. 5 0 1200 Test procedure: - counting plateau - dark current - energy resolution (Fe-55) - uniformity of gas gain ü linear scan ü area scan 03 -Mar-21 anode current, n. A 35 ROC-14, Ar/CH 4 (90/10), dark current 1250 1300 1350 1400 1450 1500 anode HV, V 1550 1600 1650 1700 ROC-14, X-ray line scan, step 3 mm, Ar/CH 4 (90/10), Ua = 1, 45 k. V, Udrift = -1120 V, uniformity 18, 4% 30 25 20 15 10 5 0 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 y axes, mm Fe-55: FWHM ~ 20% S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 28

ROC chamber: test SAMPA chip with ROC chamber ROC-chamber tested with SAMPA chip (HV=+1450 V): ENC = 828 e- (for small pads), ENC = 869 e- (for big pads) (20% more than expected due to digital noise) Waiting for 30 FE boards with read out system for tests with ROC 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 29

TPC gas system Gas mixture Ar + 10%CH 4 TPC gas flow, nominal 200 l/min TPC overpressure (2. 0 ± 0. 1)m. Bar O 2 admixture 20 ppm H 2 O admixture 10 ppm External loop, refresh gas rate 30 l/min Fresh part of gas mixture add to external (0 -50) l/min loop, range ТРС isolating gas N 2 gas flow (5 -20) l/min Delivery to JINR: gas supply system - 2015 purification system - 2017 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 30

TPC: transportation platform and ROC manipulator LHEP, bld. 205 – stored at JINR 03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 31

03 -Mar-21 S. Movchan MPD/NICA TPC status for DAC, Dubna, February 04 2020 32