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 TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon2

3. Active RadMon TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon3 I RAD I FET R RAD R RL p-JFET 12 4 ELMB-DAC PatchPanel RadMon Sensor V RAD V RL ELMB dose/fluence/temp. read. current ELMB RadMon Box

4. Active RadMon Implantation TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon4 1 ELMB + 2 DAC + 2 PP = 6 ISC

5. RadMon ISCs & ELMBs TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon5 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). 2 RadFETs (TID); 2 p-i-n diodes ( eq ); NTC: RadFETs: ~ 100 A 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.

6. ELMB-DACs TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon6 11V diode replaced with 5V diode 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) V E = 30V

7. ELMB-DACs Testing TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon7 I-V curves in the range 0-20 mA for the 12 sensor Ch. each of the 4 switch Ch. ISC 1ISC 2 ISC 3 NTC currents are not perturbated during DAC operation Load 1.3 k to stay within the V range < 30 V

8. PatchPanel (PP) boards TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon8 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

9. RadMon Pilot Setup Sep. 2008 TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon9 Rack S2B02 ELMB+DAC+PP Final PSs chosen for RadMon and all DCS CAN Bus Rack S2B19 Laptop with PVSS & CAN-USB Practice made on ATLAS-Ljubljana prototype in Lab. 555 (Nov. 2007-Sep. 2008) Pilot setup of our readout installed in USC55 from Sep. 8 th to Nov. 2008

10. TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon10 PMIL 5314 (RAMSES) TOTEM RadMon 50 PMIL 5312 (RAMSES) PMIL 5714 (RAMSES) TOTEM RadMon 51 PMIL 5712 (RAMSES) B1 B2 Monitors layout in the Tunnel RAMSES monitors also integrated into DCS RadMon 51 (POT2) Ramses ~ 5 mt.

11. Radiation @ TOTEM week 1 TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon11

12. Result RadMon Pilot Setup TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon12 We could reproduce the T c of all sensors @ 300 mt. (here T c = ~ 25 mV/ C)

13. What else did we learn ? TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon13 I Max = 18kA CMS Field does not induce noticable changes (after proper grounding); Test and debug the PVSS control function with > 35000 readout cycles. 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)

14. RadMon Control Software TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon14 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 be integrated in the global DCS structure; Proper logic to be fully defined and implemented.

15. HW Integration in IP5 Cabling: – USC55: RPs: all OK, 1 connector/ISC (Antoine); T1/T2: all OK with SUB-Ds 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. TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon15

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 CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon16 TLDPAD (Alanine) RPLBPW Dose Range 10 Gy to 100 Gy 10Gy to 1MGy 100mGy to 100 kGy 2x10 12 cm -2 to 4x10 14 cm -2 Readout technique Heating; Light emission ESRUV; Light emission Voltage measurement TOTEM

17. Passive RadMon Unit TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon17 MTS-N nat LiF:Mg,Ti MCP-7 7 LiF:Mg,Cu,P MTS-7 7 LiF:Mg,Ti MCP-7 7 LiF:Mg,Cu,P Courtesy: Ch. Ilgner (LHCb) PE box p-i-n diode BPW TLDs INB: xxxx00010132000xxxx Sensitive to different spectrum components

18. Location and Bill of Materials TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon18 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.

19. Documentation TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon19

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. TOTEM CM – 18 March 2009F. Ravotti-Status of Active/Passive RadMon20