Test
test fastbus crates by PPC
ld </site/coda/2.6.2/VXWORKSPPC/bin/fb_diag_cl.o
fb_diag
ld </site/coda/2.6.2/VXWORKSPPC/bin/test_1881.o
test_1881 #slot
2014
November 2
Fixed the fiber for G797, now has LMS signal. HV is 1370.2 V. W1139, anode cable resistance is 4 ohm.3
November 1
Things to be prepared or bought:
NIM->NEMAL adapters for Trigger Group, NEMAL extension cables with the same length.
Summing module (probably UVA 120/120A), and a VME/CAMAC discriminator (Ask Sergey to borrow one).
G900, HV channel problem
G57, anode signal is good, no dynode signal. Original HV is 1397.6 V. Dynode signal is back when the voltage is raised by 20 V, 50 V and 100 V. Finally fixed at 1447.6 V.
G386, anode signal is good, no dynode signal. Original HV is 1335.0 V. Dynode signal is back when the voltage is raised by 200 V and 250 V. Finally fixed at 1585.0 V.
G797, no anode signal, no dynode signal. Original HV is 1370.2 V. Cosmic appears when the voltage is raised by 200 V. Finally fixed at 1570.2 V, need to change the fiber.
W6, bad dynode signal, short tail, live with it.
W82, no dynode signal. Original HV is 967.0 V. Dynode signal is back when the voltage is raised by 20 V and 40 V. Finally fixed at 1007.0 V.
W160, bad dynode signal, long tail.
W243, bad dynode signal, long tail.
W347, cable resistance is 0, temporarily fixed, loose connection. HV 960.0 V -> 980.0 V
W979, no dynode signal. Original HV is 924.2 V. Dynode signal is back when the voltage is raised by 20 V and 40 V. Finally fixed at 964.2 V, long tail.
G245, cable resistance is infinite, fixed. Original HV is 1364.0 V, fixed at 1464.0 V.
W1150, no dynode signal. Original HV is 989.8 V. Dynode signal is back when the voltage is raised by 20 V and 40 V. Finally fixed at 1029.8, long tail.
October 31
G357 is tested, and good now. G8, check the divider. W690, tolerable, check it during the calibration. G797, totally dead, try to change on Saturday (Nov. 1st). W1139, no anode signal but have dynode signal, check the divider and anode cable.
August 04
1st version of readout list from Brad (hsft01.crl) is modified and successfully loaded.
Modules should work in Multi-Block Mode, so there should be more than 2 ADC boards in the crate.
A simple replay code is developed and available at cpeng@ifarm
August 05
Readout list is thoroughly tested. It can take data from up to 3 1881M ADC boards.
Some limit and problems are:
- More than 4 ADC boards would result in an "exception of interrupt" and reboot of the single board computer.
- Need to update the crate map in the readout list (how many boards and at which slots they are)
Replay code is refined, it can automatically divide the data for each channel on each ADC board, right now it can only decode for a crate with up to 3 ADC cards.
Run Number: 91
ADC Number: 26, Slot 4. ADC Number: 7, Slot 5. ADC Number: 28, Slot 6.
Run Number: 98
ADC Number: ??, Slot 9. ADC Number: ??, Slot 10. ADC Number: ??, Slot 11.
August 06
Readout list (pradtest.crl) is upgraded, it solves several problems, including:
- Now it supports up to 10 ADC boards for one crate, it is also the limit of our new power supply
- Now it scan the whole crate and generate the crate map automatically, so no need to update the crate map in the code
The limit of this readout list is:
- It can only be used for ADC 1881M boards, no fastbus TDC is supported (which is not needed in our experiment)
- There should be more than 2 ADC boards in the crate to work on the Multi-block Mode
The replay code is upgraded accordingly:
- It supports up to 10 ADC boards, 1 tree for each. There are 65 branches (1 for total, 64 for each channel) in each tree
- It now reads a configuration file at "./configuration/run_%d.dat" (or "./configuration/default.dat" if there is no such file), the configuration file tells the code how many ADC boards there are and the index number of the ADC boards
August 07
Test for all boards
Run Number: 106
Slots: 6, 7, 8, 9, 10, 11
ADC Number: 1, 2, 3, 4, 5, 6
All boards passed the test
Run Number: 107
Slots: 6, 7, 8, 9, 10, 11
ADC Number: 7, 8, 9, 10, 11, 12
All boards passed the test
board 8 was marked as "wide pedestal". No difference seen.
board 7: channel 58, no readout.
board 10: channels 16 ~ 31, 48 ~ 63, no readout
board 11: There are uniform background with a width of 80 for each channel
Change slots and check again, run number: 108
Change slots and use the problematic boards only
Slots: 14, 15, 16
ADC Number: 11, 7, 10
Every problem disappears
Run Number: 110
Slots: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
ADC Number: 13, 14, 15, 16, 17, 18, 19, 20, 22, 23
Number 21 is TDC 1877, will not be used in this experiment
All boards passed the test
Some events are bad on boards at slot 9, 11, 13. The installation is not very tight, it might be the reason.
Re-insert the boards Run Number: 111
Bad events are gone, but the channel 32 on both of board 18 and 20 has no readout. (The same as they are in Run 110)
18 and 20 are left to be tested again in the next run
Run Number: 112
Slots: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
ADC Number: 18, 20, 24, 25, 26, 27, 28, 29, 30, 31 (additional board, numbered as 31, no mark on the board)
Board 18, channel 32 has no readout, it fails in 3 tests (run 110, 111, and 112) in a row.
Board 20, channel 32 has readout now, but all of its channels have a wide spread of pedestal. width is about 20 ~ 25, has a slope at the left.
August 11
The left crate is tested again, there is still a problem with recognizing.
Right crate is setup as primexroc6, center crate is setup as primexroc5, left crate will be setup as primexroc4
Test with 250 ns ADC gate: Run Number 121, Run Number 122
According to Run Number 122, center crate has a noise problem, try to fix it.
Noise problem fixed by cleanup the redundant cabling. The problem with #18 and #20 is found to be a mistake on decoding, actually the problem is caused by #31, which is an additional board with out primex mark.
In today's test:
- ADC_12, channel 58 no readout
- ADC_15, channel 32 no readout, but it passes the test with readout on channel 32
- ADC_17, channel 32 no readout, but it passes the test with readout on channel 32
Run Number 126 Replace these 3 boards with #10, #9, #8, problems of no readout are gone, these 3 boards may need to be replaced.
Run Number 127 ADC_8 is found quite noisy, replace with ADC_7. All good now. Will test ADC_8 in future.
August 13
All crates are working now.
2016
=January 15
LMS check, 607 Cosmic run, 608
