STAR Forward GEM Tracker Safety Review Electrical Gerard

STAR Forward GEM Tracker Safety Review Electrical Gerard Visser Indiana University Cyclotron Facility John T. Anderson Argonne National Laboratory Benjamin Buck Massachusetts Institute of Technology 9/2/2009 FGT Safety Review – 9/2/2009 BNL G. Visser 1

Topics • FGT electrical overview • GEM bias connections • Front end electronics • Cable plant • Readout crate, power supplies and modules • Other FGT electrical equipment • WSC field shaping bias connections FGT Safety Review – 9/2/2009 BNL G. Visser 2

Overview I: Readout system integration schematic (simplified) Estimated cable run 65 feet [ WSC → TPC sec 2/3 boundary → sec 2/3 tray out of magnet → 2 nd level platform ceiling tray → 2 C 7/8/9 ] FGT Cables 24 FEE signal 24 power & remote sense 24 HV coax 2+2 8 Cable break connectors/boxes located just outside of west support cylinder, on TPC wheel. This point also serves as FGT detector ground tie (to TPC wheel). Internal FEE signal cables: custom low-mass aluminum design with silicone & FEP extruded insulation Wiener MPOD controller (1 x) ISEG 8 ch HV module (3 x) Wiener crate (1 x) (FGT custom) 6 U x 220 mm cards SGIS (to kill all FGT power) ethernet 208 V 1 φ ARM (12 x) (APV Readout Module) [IUCF] FGT Safety Review – 9/2/2009 BNL trig/clk DDL fiber ARC (2 x) (APV Readout Controller) [ANL] G. Visser 3

Terminator board FR-4, 32 x 38 x 0. 8 mm FEE board (2 x) FR-4, 259 x 53 x 1. 6 mm Total power 6. 9 W per quadrant (ref. slide 5, 6) see detailed cable info on slide 7 3 4 2 Ground wire 18 AWG stranded 1 “Connector” board FR-4, 65 x 45 x 0. 8 mm FGT cables to platform STAR TPC aluminum structural parts (STAR system ground) Overview II: GEM quadrant assembly and electrical connections 2 LV & signal patch Bud #PN-1320 -C 64 x 58 x 35 mm Polycarbonate, UL 94 HB Bias divider board FR-4, 20 x 275 x 0. 8 mm Anode strip board and ground plane FGT Safety Review – 9/2/2009 BNL GEM bias patch SHV cable connectors G. Visser 4

GEM bias system iseg Spezialelektronik Gmb. H # EHS 8060 n -6 k. V [hardware limit (pot) shall be set at -5 k. V] 1 m. A hardware current limit 5 k. V type, SOA # S 3838 CVX 104 K 30 or equivalent cathode 20 m. A current loop permit input connectors: SHV grounded (non-floating) output GEM #1 platform Ohmite # OA 101 KE or # OX 101 KE GEM #2 GEM #3 anode strips (to break ground loop for noise/performance reasons) Divider string power: 2. 4 W maximum 6 k. V type Syfer # 1812 Y 6 K 00221 MXT TPC west FGT Safety Review – 9/2/2009 BNL G. Visser 5

Front end electronics FEE board (prototype) Power: 1. 5 W Input supply: 0. 45 A @ +1. 25 V, 0. 78 A @ -1. 25 V Materials: FR-4, copper, nickel/gold plating, Sn. Pb solder, silicon, encapsulant (epoxy, silica, flame retardant) Signal inputs APV chip w/ encapsulant Connector board prototype Power (local): 1. 5 W Input supply: 0. 94 A @ +1. 8 V, 1. 60 A @ -1. 8 V, fused at source end of cable (ref. slide 8) Clock/trg buffers Remote sense on input supply; all terminals here fused with Raychem # nano. SMDC 020 F (0. 42 A trip @ 25 °C, 24 VDC 100 A interrupt rating) Voltage regulators 1. 8 V to 1. 25 V (2 x) 2 A max Connector is for prototype only; direct solder to cable for real board Output feed: 0. 90 A @ +1. 25 V, 1. 56 A @ -1. 25 V Materials: FR-4, polyimide (cable clamp pieces), copper, nickel/gold plating, soldermask, Sn. Pb solder, silicon, package molding compounds (epoxy, silica, flame retardant), stainless steel screws FGT Safety Review – 9/2/2009 BNL G. Visser 6

Cable plant details 1 2 3 4 Inner service combined signal/power cable 24 x 6 feet Manufacturer: Calmont Wire & Cable Co. P/N: tbd, custom design Construction: 12 pr 30 AWG CCAW* / FEP, 10 c 20 AWG CCAW / silicone, overall Al foil shield, silicone jacket Ratings: None, but constructed equivalent to UL 150 V, NEC type CL 2 or superior ( → pass UL-1581 vertical tray) Connector #1: None Connector #2: DB 37, AMP # 5 -747916 -2 (rated 3 A, 1000 VAC withstanding; service here ≤ 1. 6 A, 5 V) GEM bias HV cable (for inner service and external) 24 x 71 feet Manufacturer: NK Networks P/N: ? ? – Cable is marked “NK NETWORKS 9943 C-50 -2 -1 MODIFIZIERT FRNC-B - DESY 16995 MT” Construction: ? ? Ratings: Details unknown but the cable is approved by and procured through DESY; said to be made to CERN & DESY specifications Connector #1: SHV, Huber and Suhner # 11 -SHV-50 -2 -5 / NE 133 (similar to RG-59 type except for cable diameters) Connector #2: same, except inner cable only one connector (soldered at detector) External service signal cable 24 x 65 feet Manufacturer: Belden P/N: 1424 A Construction: 12 pr 24 AWG Cu / foam PE, overall Al foil shield, PVC jacket Ratings: UL style 2919 (30 V 80 °C); NEC type CM Connector #1: DB 25, AMP # 5 -747913 -2 (rated 3 A, 1000 VAC withstanding; service here ≤ 0. 1 A, 5 V) Connector #2: same External service power/sense cable 24 x 65 feet Manufacturer: Belden P/N: 5307 FE (selection is not final, may substitute a similar cable) Construction: 9 c 18 AWG Cu / PP (or PVC substitute), overall Al foil shield, PVC jacket Ratings: UL 300 V 75 °C, 3. 5 A per conductor; NEC type CMR Connector #1: Amphenol # 97 -3101 A-18 -1 S (rated 200 VAC, 13 A (test); service here ≤ 1. 6 A, 5 V) Connector #2: Weidmüller # BCZ 3. 81/09/90 F SN BK BX or similar (UL rated 300 V 10 A; service here ≤ 1. 6 A, 5 V) *Note: CCAW = copper-clad aluminum wire (typically used for magnet wire in aerospace equipment). 10% copper cladding by volume. Termination will be by soldering (Sn. Pb). FGT Safety Review – 9/2/2009 BNL G. Visser 7

Readout (and power) crate c. PCI Customized version of Wiener #6023 6 U crate (which is used extensively at STAR) Card depth 220 mm (vs. VME standard 160 mm) Divided into 3 segments of 7 slots each: • MPOD controller and ISEG HV modules (3, double-width) • Two segments of 7 slots for readout boards, interconnected with CPCI backplane; each slot has 13 power pins (+5) rated at 0. 8 A each Rear connection of cables to FEE, via transition modules Internal power supplies: • 24 V 23 A (for HV modules); actual load ≤ 10. 5 A • 2 x 5 V 115 A (for readout boards); actual load ≈ 46 A each Dimensions: width 429 mm, height 172 mm, depth 215 mm Weight: 17. 6 kg Rated mains input range: 100 - 240 VAC ± 10% (90. . . 265 VAC) Rated input current: Sinusoidal 16 A Inrush current: limited to rated input current (cold unit) Input fuse: external, intern on special request Isolation (input – output) CE / EN 60950, ISO 380, VDE 0805, UL 1950, C 22. 2. 950 DC output power: 3 k. W max Operation temperature: 0… 50°C ambient without derating Efficiency: 75%. . . 85% (depending on module type) In this configuration, input current 10. 9 A @ 208 V at maximum load. Actual for expected load (ref. next slide) 4. 6 A @ 208 V. FGT Safety Review – 9/2/2009 BNL G. Visser 8

Readout modules ARC module (APV Readout Controller) Power: 20 W Input supply: 4. 0 A @ +5. 0 V, fused @ 6. 3 A, Littelfuse 451 series* P 1 SIU Materials: FR-4, copper, nickel/gold plating, aluminum, package molding compounds, Sn. Pb solder, ceramics c. PCI trigger DAQ fiber Power (local): 24 W ARM (APV Readout Module) Input supply: 7. 0 A @ +5. 0 V (35 W), fused @ 10 A, Littelfuse 451 series* Output feed (2 x): 0. 94 A @ 1. 92 V, 1. 60 A @ 2. 41 V (5. 64 W), remote regulated at +1. 8 V, -1. 8 V, ground isolated P 1 Output fusing: On rear transition board at cable connectors. Littelfuse 451 series, on each line. P 2 Materials: FR-4, copper, nickel/gold plating, aluminum, package molding compounds, Sn. Pb solder, ferrites, ceramics 4 3 (ref. slide 4, 7) *Note: 300 A 32 VDC interrupt rating FGT Safety Review – 9/2/2009 BNL G. Visser 9

Other electrical equipment • Two small blowers to be mounted on west end ring of the STAR magnet, Orion Industries # OAB 800 AN-11 -1 B or similar • Shaded-pole 125 VAC motor, 18 W, will be fused and grounded of course • probably a flow or pressure sensor to be read out by slow controls (is not an interlock) • Gas system • Anticipate a few temperature and pressure sensors to be read out by RS-232 or 20 m. A loop, wired with appropriate cable, e. g. 2 C 20 AWG CMG • Readout device in FGT electronics rack, connected to ethernet • ethernet switch mounted in FGT rack or nearby • optical fiber patch box (MIC box) in FGT rack for connection to DAQ room, all fibers NEC type OFNR • STAR trigger/clock signal cable to TCD rack (1 A 1) – Belden # 8166, NEC type CM • laptop computer in FGT rack for local operation of FGT controls • DAQ computer (1) rackmounted in DAQ room • WSC field-shaping bias system (detailed on next slide) FGT Safety Review – 9/2/2009 BNL G. Visser 10

WSC field-shaping bias system Glassman EH 10 N 10, -10 k. V w/ current limit Fixed operating point tbd, expect approximately -5. 5 k. V “Protection: Automatic current regulation protects the power supply against all overload conditions, including arcs and short circuits. Fuses, surge limiting resistors, and low energy components provide the ultimate protection. Remote Controls: Common, +10 volt reference, interlock, current monitor, current program, voltage monitor, voltage program, HV enable/disable, and ground provided on a rear panel terminal block. External Interlock: Open off, close on. ” Becomes a new permit to TPC cathode Reynolds HV cable with series 531 connectors. Rated 10 k. V operation, 100% tested to 15 k. V, commercially assembled. Length approximately 50 feet, tbd. Mating connector (Reynolds series 531) is an integral bonded part of WSC – TPC mechanical interface structure. Bias voltage runs in from there to shroud electrode on 20 k. V silicone high voltage wire. FGT Safety Review – 9/2/2009 BNL G. Visser 11