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Fundamental TechnologiesVoyager LECP Pages |
December 8, 1978
Dr. Thomas P. Armstrong
Department of Physics
University of Kansas
Lawrence, KS 66045
Dear Tom:
Rate tests for LEPT detectors D2, D3, D4, D5 were run the other day. Unlike the previous set of data I sent you for detectors D1 and D2, these were not run as coincidences but as singles rates observed on Channel 42.
As you can see from the enclosed data, the rate curves exhibit a strange upturn after ~200 KHz. The only normal-looking curve is detector D3. At this point, I have no explanation for this effect. In general, though, I would say that the data is valid up through ~150 KHz.
If you want some further tests run, let me know.
Sincerely,
J. W. Kohl
| Input (KHz) | D2 (cnts/3 sec) |
D2 (KHz) |
| 1.06 | 3136 | 1.05 |
| 2.01 | 5888 | 1.96 |
| 4.03 | 11520 | 3.84 |
| 6.09 | 17150 | 5.72 |
| 8.04 | 22250 | 7.42 |
| 10.7 | 29184 | 9.73 |
| 20.7 | 51200 | 17.1 |
| 39.5 | 81920 | 27.3 |
| 59.9 | 100352 | 33.5 |
| 80.7 | 108544 | 36.2 |
| 98.0 | 110592 | 36.9 |
| 202 | 122880 | 41.0 |
| 403 | 163040 | 54.6 |
| 565 | 188416 | 62.8 |
| 729 | 204800 | 68.3 |
| Input (KHz) | D3 (cnts/3 sec) |
D3 (KHz) |
| 1.19 | 3520 | 1.17 |
| 2.05 | 6016 | 2.01 |
| 3.01 | 8704 | 2.90 |
| 4.24 | 12288 | 4.10 |
| 6.06 | 17408 | 5.80 |
| 8.19 | 23040 | 7.68 |
| 11.3 | 31232 | 10.4 |
| 20.6 | 53248 | 17.7 |
| 30.1 | 73728 | 24.6 |
| 40.5 | 92160 | 30.7 |
| 60.1 | 118784 | 39.6 |
| 79.3 | 139264 | 46.4 |
| 97.7 | 151552 | 50.5 |
| 196 | 172032 | 57.3 |
| 294 | 172032 | 57.3 |
| 393 | 167936 | 56.0 |
| 588 | 163840 | 54.6 |
| 727 | 159744 | 53.2 |
| Input (KHz) | D4 (cnts/3 sec) |
D4 (KHz) |
| 1.05 | 3136 | 1.05 |
| 2.06 | 6016 | 2.01 |
| 3.96 | 11520 | 3.84 |
| 6.01 | 17408 | 5.80 |
| 8.06 | 23040 | 7.68 |
| 10.4 | 29184 | 9.73 |
| 20.1 | 53248 | 17.7 |
| 39.5 | 94208 | 31.4 |
| 60.2 | 124928 | 41.6 |
| 78.6 | 143360 | 47.8 |
| 102 | 159744 | 53.2 |
| 210 | 163840 | 54.6 |
| 400 | 147456 | 49.2 |
| 547 | 147456 | 49.2 |
| 726 | 163840 | 54.6 |
| 517 | 147456 | 49.2 |
| 309 | 151552 | 50.5 |
Figure (restoration in progress; please check back)
| Input (KHz) | D5 (cnts/3 sec) |
D5 (KHz) |
| 1.03 | 3072 | 1.02 |
| 2.09 | 6100 | 2.03 |
| 3.94 | 11264 | 3.75 |
| 6.07 | 17408 | 5.80 |
| 8.01 | 22528 | 7.51 |
| 10.6 | 29184 | 9.73 |
| 20.2 | 51200 | 17.1 |
| 39.4 | 83968 | 28.0 |
| 60.3 | 102400 | 34.1 |
| 79.2 | 112640 | 37.5 |
| 100 | 114688 | 38.2 |
| 210 | 98304 | 32.7 |
| 389 | 114688 | 38.2 |
| 722 | 163840 | 54.6 |
| 564 | 139264 | 46.4 |
| 270 | 100352 | 33.5 |
| 201 | 100352 | 33.5 |
| 98304 | 32.7 | |
| 132 | 112640 | 37.5 |
| 100 | 114688 | 38.2 |
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Last modified 12/2/02, Tizby Hunt-Ward
tizby@ftecs.com