	<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
65	82	481777	13	75	471165	13	80	454809	12	15-JUN-07

Thr_Max in register units for M3R4-65

Thr_Max in register units for M3R4-65

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	80	75	83	77	74	87	77	91	79	91	75	89	80	86	80	85
FEB-2	84	75	77	72	73	83	72	76	79	74	60	73	78	75	73	83
FEB-3	79	84	75	84	74	85	77	89	78	82	75	82	83	78	80	78

Noise rate at Thr_Max [counts/sec] for M3R4-65

Noise rate at Thr_Max [counts/sec] for M3R4-65

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	384567	531292	526837	479505	369701	418897	544075	365837	365638	545272	385964	540007	373982	673200	603254	600404
FEB-2	442220	556034	412090	691269	335151	374284	368518	371978	445038	385766	332651	538568	406671	511756	563820	802825
FEB-3	487317	447037	449617	344685	380336	493425	470178	292979	541616	447956	381956	340603	410016	617747	588502	582978