1 / 13

LV and HV for M1 R1 Muon

LV and HV for M1 R1 Muon. Low Voltage requirements final layout High Voltage requirements prototype cabling. VME DAQ. GEM Chamber. Tracking system. LNF Cosmic test setup. In this setup we are testing : HV passive divider HV cabling (50 m cable) LV cabling LV distributor

mari-jefferson
Download Presentation

LV and HV for M1 R1 Muon

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LV and HV for M1 R1 Muon • Low Voltage • requirements • final layout • High Voltage • requirements • prototype • cabling

  2. VME DAQ GEM Chamber Tracking system LNF Cosmic test setup • In this setup we are testing : • HV passive divider • HV cabling (50 m cable) • LV cabling • LV distributor • LV regulator • with “final” readout with VME scalers and tdcs

  3. Low Voltage System Tests has been performed with linear Power Supply :  in LHCb we have to go to rad tol regulator(STM-CERN design)  same as for LHCb wire-chambers FEE Boards are fed with LV distributor board (not in series !) Power consumption/board = 0.5A Supply voltage =2.5V 24 FEE boards /chamber 3 FEE boards / regulator 8 regulators /chamber First prototype of LV distributor done and under test on LNF cosmic setup

  4. FEE boards around chamber

  5. lv distribution board Low Voltage layout regulator and sensing 5 m 30 m Linear Power Supply

  6. Faraday Cage brass (400 mm) FC alignment done with special tool respect to reference holes flat cables from LV distributor Faraday cage prototype done and production started

  7. HV requirements So far: 7 HV channels/gap: the easiest and the most expensive but very dangerous in case of a trip at least the GEMs should be together • Requirements: • stay in plateau with 10 μA in the detector in LHCb • limit power consumption • protect GEMs in case of sparks • monitor current in the detector •  a candidate solution with 3dividers and 3 commercial power supplies (CAEN) • HV divider (simulated by Cagliari; realized by LNF): • first prototype: high dissipation on a resistor of the G2 divider stage, leading to a change in the resistor value  second prototype: test done and ok • ready for production

  8. HV cabling inside the chamber Studies on HV connectors (commercial one have Teflon)

  9. HV Gem divider 50 KW 50 KW current monitor 6kV/200mA -3880 -2830 -2390 -2040 -1610 -910 -500 2.2 nF 1MW 5 KW 5 KW 4kV/2mA 10 nF g1 220 KW 6 Inputs 14 Outputs 175 KW g2 210 KW 810 KW 5 KW 5 KW 1.3kV/10mA Divider made of Al2O3 with dissipating bottom layer and trimmed serigraphic resistors 10 nF g3 63 KW 75 KW

  10. Divider Measurements working point mA Transfer fields Currents on divider

  11. Divider Measurements working point GEM Voltages

  12. HV System architecture “Standard” (non Rad-Tol) HV system with long HV lines (72 HV lines) • 1 SY1527 mainframe • 2 A1832N HV modules • 1 A1535N HV module • 2 A1738N HV modules • SHV-to-multiconductor patch panels SHV-to-multiwire HV PP SY 1527 System Mainframe 72 SHV 2-5 m

  13. HV cable Long distance cable • 18 conductors shielded cable from tecnikabel • 4.5 kV nominal voltage • 1.685 euro/m (for a minimum of 2000 m) • Number of cable doubled for future upgrade • 6(+2) cables from local patch panel to M1 cavern patch panel side A • 6(+2) cables from local patch panel to M1 cavern patch panel side C Local HV PP M1 PP side A 60 m SY 1527 System Mainframe 2-5 m 5 m 72 long distance cables M1 PP side C

More Related