D. Attié , P. Colas, E. Delagnes, M. Riallot M. Dixit, J.-P. Martin, S. Bhattacharya , S. Mukhopadhyay Linear Collider Power Distribution & Pulsing Workshop May 10th, 2011 irfu y a l c a s irfu y a l c a s Power pulsing of Power pulsing of AFTER in magnetic AFTER in magnetic field field
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D. Attié , P. Colas, E. Delagnes, M. Riallot M. Dixit, J.-P. Martin,
Power pulsing of AFTER in magnetic field. D. Attié , P. Colas, E. Delagnes, M. Riallot M. Dixit, J.-P. Martin, S. Bhattacharya , S. Mukhopadhyay. Linear Collider Power Distribution & Pulsing Workshop May 10th, 2011. Introduction. Proposal: - PowerPoint PPT Presentation
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D. Attié, P. Colas, E. Delagnes, M. RiallotM. Dixit, J.-P. Martin,
S. Bhattacharya , S. Mukhopadhyay
Linear Collider Power Distribution & Pulsing Workshop
May 10th, 2011
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Power pulsing of AFTER Power pulsing of AFTER in magnetic fieldin magnetic field
IntroductionIntroductionIntroductionIntroduction
[email protected] May 10, 2011 - LC Power Distribution and Pulsing Workshop
•Proposal:
– Use existing electronics and adapt it for power pulsing to read out the detector pads:
• Integrated T2K electronics• Having a two power states: low and nominal • Switching between state as fast as possible
– In parallel, use constant current charging circuits to readout the detector mesh (see J.-P. Martin’s talk)
– Using an 55Fe source to monitor the signal and gain
[email protected] May 10, 2011 - LC Power Distribution and Pulsing Workshop
• AFTER chip (72 channels/chip) from T2K experiment:
– low-noise (700 e-) pre-amplifier-shaper– full wave sampling by SCA (511 time bins)– 120 fC to 600 fC tunable gain– 100 ns to 2 μs tunable peaking time– pulser for calibration– 25 W, 5V at 5 A (0,5 W/chip)
[email protected] May 10, 2011 - LC Power Distribution and Pulsing Workshop
•DESY 5T magnet has to be reinstalled
•Endplate ø 32 cm
•Field cage length not yet defined
•1 FEM and 4 FEC to readout 1136 pads of 3,7×3,7mm²
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B
Readout PadsReadout PadsReadout PadsReadout Pads
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16 independent HV connections read out by
constant current charging system
•Specific firmware of the for the FPGA Xilink 5 will be done
•Switch on and off the regulator TPS70402 for powering 3.3 V: t<1 ms
Low power state conditionsLow power state conditionsLow power state conditionsLow power state conditions
[email protected] May 10, 2011 - LC Power Distribution and Pulsing Workshop
•Try power switching on both the (segmented) mesh readout as studied by Jean-Pierre Martin (see the next talk) and the T2K electronics
•For T2K electronics, power switching might be done on the mezzanine card (FEM) developed for the 7-module configuration of the Large Prototype Micromegas TPC
•The test will consist in checking the properties of known X-ray lines with and without pulsing
•The mechanical effects will be studied by having a large enough number of channels (1200) and a large magnetic field (5T) close to realistic conditions
Summary of the planSummary of the planSummary of the planSummary of the plan
[email protected] May 10, 2011 - LC Power Distribution and Pulsing Workshop