AMANDA-DAQ: TDC Calibration Setup for 2001.

In January and February 2001, a detailed calibration of all VME and CAMAC TDCs was done, see talk at Bartol-Meeting, spring 2001.
Performance of all TDCs in use was verfied to be according to specs, regarding the width of the time-bin (3377: 1.000 nsec/bin and V693: 1./0.960=1.0416667 nsec/bin).

A full online-TDC-calibration monitoring was installed for 4 channels (1 CAMAC-3377 and 3 V693 from 3 different boards).

The setup is self-triggering with f<<1Hz.
It uses four dead OMs: OM 40, 428, 543, 632 ; and it uses trigger bit 6.
This trigger bit was during summer 2000/01 partially used as Laser-Trigger.
The mapping of the four OM channels 40, 428, 543, 632 is to readout channels 9501-9504 . For more details on used DMADD Chans etc, see the setup.cnf file.
Two NIM pulses of 100 nsec width are generated by a Stanford generator. They are faned out by a LRS429A.
Pulse timing is 25000 nsec difference for the two pulses, i.e. calibration runs at max. precision.

An example for the f2000 output of an event triggered by the TDC-calibration setup is given below (file ab_2001_044_3113_000.data).

Please note the precise 25000 nsec reading for the CAMAC Chan (9501) and the one scaled by 0.960 for the VME Channels.

EM 1986 3113 2001 44 70641.382342
HT 134 ? 1 0 622 147 2
HT 158 100 2 0 29996 236 2
HT 223 ? 3 0 5649 260 2
HT 237 177 4 0 18332 250 8
HT 237 * 5 0 18590 234 8
HT 237 * 6 0 22104 222 8
HT 237 * 7 0 27478 223 8
HT 258 ? 8 0 7584 256 2
HT 259 144 9 0 24365 259 2
HT 307 ? 10 0 14544 458 2
HT 356 ? 11 0 9573 281 2
HT 373 ? 12 0 4765 26 2
HT 388 ? 13 0 ? 83 >5
HT 388 * 14 0 2259 240 >5
HT 388 * 15 0 3135 160 >5
HT 407 ? 16 0 4410 23 2
HT 451 ? 17 0 5416 33 2
HT 474 ? 18 0 6722 26 4
HT 474 * 19 0 20616 29 4
HT 516 ? 20 0 31144 25 2
HT 544 234 21 0 28952 27 2
HT 580 ? 22 0 16226 354 4
HT 580 * 23 0 16609 16 4
HT 613 13 24 0 ? ? 0
HT 622 15 25 0 ? ? 0
HT 642 ? 26 0 8281 661 2
HT 669 70 27 0 ? ? 0
HT 674 91 28 0 ? ? 0
HT 9006 ? 29 0 22827 49 2
HT 9007 ? 30 0 22844 56 2
HT 9501 ? 31 0 2927 113 4
HT 9501 * 32 0 27926 113 4
HT 9502 ? 33 0 4138 108 4
HT 9502 * 34 0 28138 108 4
HT 9503 ? 35 0 4136 109 4
HT 9503 * 36 0 28136 109 4
HT 9504 ? 37 0 4136 109 4
HT 9504 * 38 0 28136 109 4
TRIG main 22844 56 yes
TRIG amab10 -1 -1 yes
TRIG LTDC 22827 49 yes
EE

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Author of this page:
Ralf Wischnewski
31-December-2001