	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
45	85	514563	13	79	450259	13	80	384724	11	09-JUL-07

Thr_Max in register units for M3R4-45

Thr_Max in register units for M3R4-45

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	86	82	84	89	86	85	95	83	86	85	87	82	81	80	87	85
FEB-2	77	81	77	77	83	80	79	76	77	78	80	75	74	76	86	80
FEB-3	83	80	79	81	72	82	80	74	81	75	80	83	90	76	85	74

Noise rate at Thr_Max [counts/sec] for M3R4-45

Noise rate at Thr_Max [counts/sec] for M3R4-45

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	519964	542013	545349	523359	432515	485786	376376	464186	405728	591304	557469	381305	446558	543282	585307	832501
FEB-2	489584	472309	418551	468419	333788	454124	312294	351341	498594	328980	502321	378837	435709	442882	581761	734652
FEB-3	406981	461474	424709	390642	480457	207885	214103	209016	318632	609814	276554	332796	361929	412681	520211	527706