Progress in Radiation and Magnetic Field tests of CAEN HV and LV boards

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Magdalene Davidson
5 years ago
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1 UNI EN ISO 9001 CERT. N CAEN 8 th Topical Seminar on Innovative Particle and Radiation Detectors: Progress in Radiation and Magnetic Field tests of CAEN HV and LV boards Giovanni GRIECO <g.grieco@caen.it> COSTRUZIONI APPARECCHIATURE ELETTRONICHE NUCLEARI Via Vetraia, 11 - I VIAREGGIO (Italy) Tel URL:

2 Summary CAEN approach to LHC power supplies Implemented devices working in hostile area Result of last tests in radiation and magnetic field Conclusions

3 SY1527 Integration in DCS Telnet Client LabView on PC/MAC Router Internet TCP/IP LAN ETH I/F Telnet Client RS232 I/F HV/LV Out Detector OPC Server (via TCP/IP) OPC Server (via RS232) HV+Control Custom HV Distr. Custom LV Distr. Custom HV Distr. OPC Client OPC LAN

4 CAEN approach to the problems in power supplies of LHC Basic requirements Radiation tolerance Magnetic field tolerance (up to 10 KGauss) Low Cost (COTS) Hi-Power (up to 1 KWatt) Efficient energy transmission Low noise Floating ground

5 CAEN Experience in LHC Hostile Area 97: First COTS rad-tolerance tests (ENEA - La Casaccia) 98: NIC Non Inductive Converter 99: Tests with p and n in Louvain-la-Neuve of A877 ( CMS Muon Chambers ) 00: Special material research 01: A New design (Patent Pending) for a family of High and Low voltage DC/DC converters

6 System Philosophy CONTROL ROOM HOSTILE AREA SY1527 SYSTEM MAINFRAME POWER FAILURE INTERRUPT 48 V 48 V CONTROL LOGIC CONTROL LOGIC DC-DC DC-DC DC-DC DC-DC DC-DC DC-DC V+ S+ S- V- V+ S+ S- V- V+ S+ S- V- V+ S+ S- V- V+ S+ S- V- V+ S+ S- V- SY V HIGH POWER SOURCE 48 V BACK UP BATTERY TO BE DEFINED

7 Functional Prototype SASY: a Sub Assembly SYstem Functional Prototype for Easy Testing Floating ground Parameters controlled via SY1527/SY2527 mainframe

8 The SASY 2000 A functional prototype solution

9 SASY 2000 Design SASY 2000 Power Supply and Control Diagram: Tri-phase power supply Power 48V PGND Signals coming from Control board inside SY V SY V Auxiliary DC/DC +12V Converter CAN -12V HV_CLK VCC SYS_CLK VCC VCC A1000 controller GND > To the backplane's bus

10 SASY 2000 Design SASY 2000 Power Supply and Control: Actual Implementation

11 Common Noise Reduction Viewpoint AGND FAGND +48v

12 Expected Radiation and Magnetic Field Tolerance Magnetic Field:»up to 10 kgauss Radiation:»60 MeV protons, up to 2*10 10 p/cm 2»Up to 60 MeV neutrons, up to n/cm 2»up to 7 krad

13 SASY 2000 family: SA2xxx (Custom Development) HV Hi Power (up to 40W) Hi Resolution (2 namp) Collaboration: ALICE ATLAS CMS TOTEM LV Hi Power (up to 1000W) Low Noise for Analog Application (less than 5 mvpp) Example of the LAST TESTED prototype in hostile area: SA2002 SA2003 SA2004 SA200x

SA2002 2 Ch Low Voltage Module Main Features for each channel:

14 SA Ch Low Voltage Module Main Features for each channel: V out = V I out = 2 A 1 A V Ripple = < 20 mvpp

SA2003 4 ch DAC Module Main Features for each

15 SA ch DAC Module Main Features for each channel: 14 bit progammable voltage = 0 3 V I out = 30 ma

SA2004 1 ch Low Voltage High Current Module Main

16 SA ch Low Voltage High Current Module Main Features: V out = 4 6 V I out = 60 A Ripple = < 150 mvpp

17 SA200x 1 ch Low Voltage High Current Module Main Features: V out = 5 V I out = 80 A Ripple = < 30 mvpp Smaller volume than SA2004

18 Test under Radiation Louvain la Neuve, August 26 th 2002 Tested modules : SA2002, SA2003 and SA2004 Test Time: 2h 40 Radiation: up to 60 MeV n s, Fluence 10 8 n/cm 2 Average target distance: 75 cm. Total dose: n/cm 2 Branch controller on SY2527

19 Test Setup Louvain la Neuve, August 26 th 2002

20 Test Setup Louvain la Neuve, August 26 th 2002

21 Test Setup Louvain la Neuve, August 26 th 2002

22 Tests Performed During the test lots of cycles of ramp-up and ramp-down were performed Output voltages were changed continuously

23 Test Results During the test the communication with the SASY was lost for three times but the problem was recovered with a remote operation. After the test and the total dose of n/cm 2 the SASY works perfectly.

24 Test in Magnetic Field CERN, September 5 th Vrin - Rshunt (10mOhm) SETUP Pwr48V + - SY2527 BRANCH CONTROLLER Iin 48Vsig. + - VinSASY SASY IinCH Communications + - VinCH Channel + Vrout - Rshunt (1mOhm) Iout + Vout - Active load controls

25 Test Setup

26 Test Setup

27 SA2004 Tests performed Channel efficiency checked in the following condition:» Vout = 5 Volt» Iout = 30, 40, 50 Amp» B = 0, 1, 3, 5 Kgauss

28 SA2004 Test results Efficiency ( % ) SA2004 ( 5V - 60Amp max ) Output: 30 Amp 40 Amp 50 Amp Worst Case: B Magnetic Field ( Kgauss )

29 SA200x Tests performed Channel efficiency checked in the following condition:» Vout = 5 Volt» Iout = 40, 60, 80 Amp» B // and = 0, 1, 2, 3, 4, 5 KGauss

SA200x Test results - 1 New SASY Module 5V - 80 Amp Worst Case Worst Case: Efficiency ( % ) 100

30 SA200x Test results - 1 New SASY Module 5V - 80 Amp Worst Case Worst Case: Efficiency ( % ) Magnetic Field ( KGauss ) Output: 40 Amp 60 Amp 80 Amp B

31 SA200x Test results - 2 New SASY Module 5V - 80 Amp Best Case Best Case: Efficiency ( % ) Magnetic Field ( KGauss ) Output: 40 Amp 60 Amp 80 Amp B

32 Conclusions & Comments Test in Magnetic Field: R&D steps are completed Test under Radiation: known problems are solved Components: Purchasing strategy Time Schedule: From the prototype to the production

Quality assurance for CMS Tracker LV and HV Power Supplies

Quality assurance for CMS Tracker LV and HV Power Supplies M. Costa a,b, A. Peruzzo a, M. Sertoli a, P. Trapani a,b L.Periale b, L.Isabella c, C. Landi c, A.Lucchesi c a Dipartimento di Fisica sperimentale,