	<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
15	77	349393	12	80	515177	13	85	461617	12	27-JUN-07

Thr_Max in register units for M3R4-15

Thr_Max in register units for M3R4-15

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	78	76	79	73	83	70	82	67	82	68	79	70	88	78	82	77
FEB-2	75	85	77	79	73	82	74	86	74	89	77	89	75	86	83	82
FEB-3	80	78	90	89	91	81	84	90	89	84	89	86	82	80	85	83

Noise rate at Thr_Max [counts/sec] for M3R4-15

Noise rate at Thr_Max [counts/sec] for M3R4-15

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	442932	392095	417345	216398	369062	153547	404118	199575	471763	206598	555197	240184	351526	235484	584978	349484
FEB-2	494267	568184	689956	488315	498241	419868	367625	452519	402851	329526	438096	574146	614127	562014	560341	782762
FEB-3	357048	628406	338164	646092	278958	429355	273659	735749	325076	451307	305622	469059	495003	489778	482010	680581