	<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
28	79	448003	12	85	476777	12	76	502531	13	25-JUN-07

Thr_Max in register units for M3R4-28

Thr_Max in register units for M3R4-28

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	75	77	83	85	81	76	70	83	72	87	71	85	69	85	73	85
FEB-2	81	91	79	83	87	82	81	87	86	87	84	83	92	85	77	90
FEB-3	73	79	71	78	78	73	76	79	77	81	85	73	64	85	67	77

Noise rate at Thr_Max [counts/sec] for M3R4-28

Noise rate at Thr_Max [counts/sec] for M3R4-28

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	383350	563234	515701	375781	419098	422936	421300	440738	263911	431091	450888	348398	389298	578960	535938	627418
FEB-2	462951	499194	563650	444730	376913	340374	443434	300071	713248	558960	393186	340241	447219	503899	643680	596682
FEB-3	464389	638834	421112	447268	286269	520868	320068	512857	389721	879058	372964	479000	474328	498727	518939	816094