1 / 20

Status of the Active and Passive Radiation Monitoring Systems

Status of the Active and Passive Radiation Monitoring Systems. Federico Ravotti (PH/TOT) TOTEM Collaboration Meeting 18 March 2009. Contents. Active RadMon System Dedicated electronics and cabling integrated into the DCS Review and Implantation in the experiment;

acton-myers
Download Presentation

Status of the Active and Passive Radiation Monitoring Systems

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. Status of the Active and Passive Radiation Monitoring Systems Federico Ravotti (PH/TOT) TOTEM Collaboration Meeting 18 March 2009

  2. Contents • Active RadMon System Dedicated electronics and cabling integrated into the DCS • Review and Implantation in the experiment; • Status of the system components; • Results of the Pilot System (Sep.-Nov. 2008); • Control Software and Integration in IP5; • Passive RadMon System Set of samples which do not need readout electronics • Review of passive dosimeters used in TOTEM; • Passive RadMon units; • Implantation and Bill of Materials; • Conclusions F. Ravotti-Status of Active/Passive RadMon

  3. Active RadMon dose/fluence/temp. VRAD read. current VRL ELMB RadMon Sensor 4 12 IFET ELMB RadMon Box p-JFET RRAD IRAD RRL ELMB-DAC PatchPanel F. Ravotti-Status of Active/Passive RadMon

  4. Active RadMon Implantation 1 ELMB + 2 DAC + 2 PP = 6 ISC F. Ravotti-Status of Active/Passive RadMon

  5. RadMon ISCs & ELMBs • 2 RadFETs (TID); 2 p-i-n diodes (Feq); NTC: • RadFETs: ~ 100mA x 1000 ms • p-i-n diodes: 1mA x 700 ms • All 36 ISCs produced & characterized at the end of 2008 by PH/DT; • 2 in RPs @ 220 mt, 1 in T2 ¼ so far; • PH/DT manages the stock of spares for LHC experiments. • 7 ELMBs for RadMon within the batch of the DCS (Fernando); • ELMBs configured for “non-standard” CAN-bus data transfer mechanism: on-demand SDO (usually: synchronized PDO). F. Ravotti-Status of Active/Passive RadMon

  6. ELMB-DACs • NIKHEF Project (2002), ATLAS (2006) • New production TOTEM/LHCb (2008) • 2 Prototypes with wrong Zener diode • 40 DACs produced and tested • 34 OK (3 damaged & repaired) – 6 BAD • 14 + 6 spares for TOTEM + left PCBs ... • Each of 16 ch./DAC individually calibrated with test bench in lab. 555 running PVSS and data analysis program (William) 11V diode replaced with 5V diode VE = 30V F. Ravotti-Status of Active/Passive RadMon

  7. ELMB-DACs Testing I-V curves in the range 0-20 mA for the 12 sensor Ch.  each of the 4 switch Ch. ISC 1 ISC 2 Load 1.3 kW to stay within the V range < 30 V ISC 3 NTC currents are not perturbated during DAC operation F. Ravotti-Status of Active/Passive RadMon

  8. PatchPanel (PP) boards • ATLAS PP for 6 ISCs hosting 2 rad. sensors + NTC (2005) • Design of TOTEM/LHCb PP for 3 ISC hosting 4 radiation sensors + NTC (2008) • 2 Prototypes + 36 Produced (Johan) • Production inspected and tested (Josef) • 35 OK (few scratches on signal lines t.b.r.) • 1 Discarded (big blisters on PCB surface) • 14 + 4 spares ready for TOTEM ISC 1 ISC 2 ISC3 Spares F. Ravotti-Status of Active/Passive RadMon

  9. RadMon Pilot Setup Sep. 2008 • Practice made on ATLAS-Ljubljana prototype in Lab. 555 (Nov. 2007-Sep. 2008) • Pilot setup of our readout installed in USC55 from Sep. 8th to Nov. 2008 CAN Bus Rack S2B02 ELMB+DAC+PP Final PSs chosen for RadMon and all DCS Rack S2B19 Laptop with PVSS & CAN-USB F. Ravotti-Status of Active/Passive RadMon

  10. Monitors layout in the Tunnel PMIL 5312 (RAMSES) RadMon 51 (POT2) B1 PMIL 5314 (RAMSES) TOTEM RadMon 50 ~ 5 mt. B2 PMIL 5712 (RAMSES) Ramses PMIL 5714 (RAMSES) TOTEM RadMon 51 RAMSES monitors also integrated into DCS F. Ravotti-Status of Active/Passive RadMon

  11. Radiation @ TOTEM “week 1” F. Ravotti-Status of Active/Passive RadMon

  12. Result RadMon Pilot Setup We could reproduce the Tc of all sensors @ 300 mt. (here Tc = ~ 25 mV/C) F. Ravotti-Status of Active/Passive RadMon

  13. What else did we learn ? • Grounding of the Power Supplies; • Temp. behaviour on the RPMB in function of cooling conditions (det. OFF: T~13C while T(Si) =-35C) I Max = 18kA • CMS mField does not induce noticable changes (after proper grounding); • Test and debug the PVSS control function with > 35‘000 readout cycles. F. Ravotti-Status of Active/Passive RadMon

  14. RadMon Control Software • RadMon ELMBs use different data handling; • Prototype of PVSS ctr. function developed & tested: • now used in the RPMB Test Panel of Lab. 555 (Ivan) • Sizable work for the DCS team (D2-to-D5); • Sequential readout of 3 ISCs (1 PP board) in ~ 30s. • ISC1 • SW OFF  NTC  SW ON  READ sens. & curr.  SW OFF • ISC2 • SW OFF  NTC  ... • Needs to beintegratedin the global DCS structure; • Proper logic to be fully defined and implemented. F. Ravotti-Status of Active/Passive RadMon

  15. HW Integration in IP5 • Cabling: • USC55: • RPs: all OK, 1 connector/ISC (Antoine); • T1/T2: all OK with SUB-D’s  Adaptation needed • Missing: Connectors and “short cables” @ RP 147 mt. • DCS Rack: • RPs: “ELMB Box” is being assembled and cabled (Johan); • T1/T2: mechanics ready, “ELMB Box” to be assembled. F. Ravotti-Status of Active/Passive RadMon

  16. Passive RadMon • Complementary/Redundant Radiation Measurements; • Passive sensors needs to be removed for readout; • WG started as common project for LHC Experiments (2004); • Since then … • ATLAS: samples from different institutes; • ALICE: ? • CMS/ATLAS-ALFA: samples from DESY; • LHCb: exploited the WG outcome. TOTEM F. Ravotti-Status of Active/Passive RadMon

  17. MTS - N LiF:Mg,Ti nat MTS - 7 LiF:Mg,Ti 7 MCP - 7 LiF:Mg,Cu,P 7 MCP - 7 LiF:Mg,Cu,P 7 Passive RadMon Unit p-i-n diode BPW TLDs Sensitive to different spectrum components INB: xxxx00010132000xxxx PE box Courtesy: Ch. Ilgner (LHCb) F. Ravotti-Status of Active/Passive RadMon

  18. Location and Bill of Materials • 50 PE housing produced by the Dortmund TU obtained via LHCb; • 40 TLDs out from the agreement LHCb-IJF, Krakow, Poland (includes readout). • 40 units destined to TOTEM: “fresh” samples for 2009 run on the way for replacement; • 36 p-i-n diodes from PH/DT; • > 100 Alanine & > 70 RPL from CERN DG/SCR • 2 mounted on RPs. All the rest under assembly (Antoine); • readout/replacement instructions, INB numbering, ... TOTEM-RAD-002. F. Ravotti-Status of Active/Passive RadMon

  19. Documentation F. Ravotti-Status of Active/Passive RadMon

  20. Conclusions • Active RadMon System • All components were procured/produced; • Pilot Setup validate the design/allowed extensive tests; • Control Software needs to be integrated in the DCS; • Final HW needs to be integrated in IP5; • Passive RadMon System • All sensors were procured for experiment startup; • All passive units are available for installation. F. Ravotti-Status of Active/Passive RadMon

More Related