	<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
69	78	444836	12	77	495141	12	84	510537	12	08-MAR-07

Thr_Max in register units for M3R4-69

Thr_Max in register units for M3R4-69

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	75	76	71	79	81	80	81	81	74	81	75	86	78	76	74
FEB-2	77	70	80	74	80	77	78	74	79	78	77	77	85	82	77	72
FEB-3	82	83	82	85	90	85	87	83	82	84	81	85	83	82	83	85

Noise rate at Thr_Max [counts/sec] for M3R4-69

Noise rate at Thr_Max [counts/sec] for M3R4-69

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	387433	482112	540612	460060	310517	438195	308873	602068	280383	368676	431295	306244	462716	520795	621670	595721
FEB-2	454400	641264	483864	491494	388857	442734	371549	358099	367905	341075	562680	362260	609135	638554	601956	806436
FEB-3	639548	541427	765437	402107	422427	386236	349704	395487	394150	509912	396461	412311	440111	855910	729112	528252