LV-PP4 Test Crate Maaike Limper

Yuriy Pylypchenko

12/13/2011 1 IBL LV-PP4 Meeting

Test Crate in SR1

Test Load

4 1/2 digit precision Ampere-meter

WIENER Power Supply

LV-PP4 Crate

CANBus cable and CANBus Power Supply

12/13/2011 2 IBL Off-Detector Working Group Meeting

Test Crate in SR1

12/13/2011 3 IBL Off-Detector Working Group Meeting

“PLUS” slot Ampere-meter

“MINUS” slot Ampere-meter

4 1/2 digit precision Ampere-meter

3 1/2 digit precision Ampere-meter

Because the resolution of ELMB and your amperemeter is not fine enough to calibrate with 1 A.

Overview

● Three cards (S/N: 001, 002 and 004) look o.k.

● Card S/N 003 appeared to have 3 bad channels.

● Checks at 1-4 A didn’t show in general good bahaviour

● However I found it quite hard to fine-tune each channel – The values tuned at ”minus” slot are not reproduce when the card is inserted in

”plus” slot.

– Is it valid to calibrate at the return current?

– Ampere-meter borrowed at E-pool as 4 ½ precision appears to be 3 ½ one... This explains a lot if not everything

12/13/2011 4 IBL Off-Detector Working Group Meeting

Card S/N 003 • Three channels are not in the right range (didn’t come done to 500 mV at 1

A) • Red color: optoboard channel when in ”minus” slot (return current) • Black color: optoboard channel when in ”plus” slot • Out of range are 11+/41-, 42+ /12- and 43+ /13- channels

12/13/2011 5 IBL Off-Detector Working Group Meeting

Card S/N 003 • Out of range are 11+/41-, 42+ /12- and 43+ /13- channels

S/N 003 12/13/2011 6 IBL Off-Detector Working Group Meeting

Channel Mapping

S/N 003

N.B. • Optoboard spits each Wiener LV channel into 4 sub-channels, • Optoboard channel naming:

• first digit indicates the Wiener PS channel, • second digit indicates optoboard sub-channel

12/13/2011 7 IBL Off-Detector Working Group Meeting

Cards 001, 002 and 004 • look good • The following slides show the results of the test performed with card001 and card002

Card 001. Details for group of channels ch1X+/4X- tested in “plus” position. - Only ch11+/41- is fine-tuned at 4 A - The other are not accessible in “plus” slot

12/13/2011 8 IBL Off-Detector Working Group Meeting

Card 001. ch11+/41- tested in “plus” position. Fine-tuned at 4 A. Not yet sealed.

● RMS is o.k. ● Values tuned at 4 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 9 IBL Off-Detector Working Group Meeting

Card 001. ch12+/42- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 10 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. ch13+/43- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 11 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. ch14+/44- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 12 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. Details for group of channels ch2X+/3X- tested in “plus” position. - Only ch21+/32- is fine-tuned at 4 A - The other are not accessible in “plus” slot

12/13/2011 13 IBL Off-Detector Working Group Meeting

Card 001. ch21+/31- tested in “plus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 14 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. ch22+/32- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 15 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. ch23+/33- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 16 IBL Off-Detector Working Group Meeting

● RMS values look larger than those for the other channels ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. ch24+/34- tested in “plus” position. Not fine-tuned.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 17 IBL Off-Detector Working Group Meeting

● RMS values look not good than those for the other channels ● Values pre-tuned at 1 A look reasonable at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 001. Details for group of channels ch2X+/3X- tested in “minus” position. - Only ch21+/32- is fine-tuned at 4 A while in “plus” slot - The other are were accessible in “plus” slot, therefore not tune

12/13/2011 18 IBL Off-Detector Working Group Meeting

Card 001. ch21+/31- checked in “minus” position. Fine-tuned at 4 A in “plus” slot. Sealed.

● RMS is o.k. The RMS at 4 A (2000 mV) is biased since I was still adjusting the current. Channel is quite sensitive :-)

● Values tuned at 4 A in “plus” slot look O.K. In minus slot for all currents! – Expected Voltages

(V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 19 IBL Off-Detector Working Group Meeting

Card 001. ch24+/34- checked in “minus” position. Not tuned at 4 A

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 20 IBL Off-Detector Working Group Meeting

● Values tuned at 4 A in “plus” slot look O.K. In minus slot for all currents!

Card 002. Details for group of channels ch4X+/1X- tested in “minus” position. - All channels are fine-tuned at 4 A and sealed

12/13/2011 21 IBL Off-Detector Working Group Meeting

Card 002. ch41+/11- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 22 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. ch42+/12- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 23 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. ch43+/13- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 24 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 003. ch44+/14- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 25 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A scale wide at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. Details for group of channels ch3X+/2X- tested in “minus” position. - All channels are fine-tuned at 4 A and sealed

12/13/2011 26 IBL Off-Detector Working Group Meeting

Card 002. ch31+/21- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 27 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. ch32+/22- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 28 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. ch33+/23- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 29 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. ch34+/24- tested in “minus” position. Fine-tuned at 4 A. Sealed.

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

12/13/2011 30 IBL Off-Detector Working Group Meeting

● RMS is o.k. ● Values tuned at 4 A look well at 3, 2 and 1 A, ● Upper right plot shows the current vs average ELMB voltage ● Lower right plot shows the offset from the V0 (read and in % black). In blue RMS

divided by the average voltage value at given current is shown (x100)

Card 002. Details for group of channels ch3X+/2X- x-checked in “plus” position after tuning. - All channels are fine-tuned in “minus” slot at 4 A, and sealed

12/13/2011 31 IBL Off-Detector Working Group Meeting

Card 002. ch31+/21- fine-tuned in “minus” position at 4A. Sealed. X-check in”plus” slot [Compare to slide 27]

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

● RMS is o.k. The structure at 4 A is due to adjusting the current while taking the data (human factor).

● Values tuned at 4 A in “minus” slot are not reproduced: -18 mV @ 4A, -12 mV @ 3A, -7 mV @ 2A and -3mV @ 1A ??? (the slope p1 in (p0 + p1*V) looks similar, but the offset p0 is shifted to lower values)

● The offset is bigger than any uncertainty I can imagine.

12/13/2011 32 IBL Off-Detector Working Group Meeting

Card 002. ch34+/24- fine-tuned in “minus” position at 4A. Sealed. X-check in”plus” slot [Compare to slide 30]

– Expected Voltages (V0): 1 A -> 500 mV 2 A -> 1000 mV 3 A -> 1500 mV 4A -> 2000 mV

● RMS is o.k. The tiny structure at 4 A is due to adjusting the current while taking the data (human factor).

● Values tuned at 4 A in “minus” slot are not reproduced: +7 mV @ 4A, +4 mV @ 3A, +3 mV @ 2A and +1mV @ 1A ??? (the slope p1 in (p0 + p1*V) looks similar, but the offset p0 is shifted to higher values)

● The offset is quite significant but

12/13/2011 33 IBL Off-Detector Working Group Meeting