	<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
91	79	452095	12	83	452010	12	77	379927	11	16-MAR-07

Thr_Max in register units for M3R4-91

Thr_Max in register units for M3R4-91

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	74	79	81	76	83	81	75	80	76	86	81	72	82	77	82	75
FEB-2	76	84	86	91	86	81	88	79	86	82	82	80	84	79	86	80
FEB-3	80	71	82	70	84	74	79	68	79	75	79	76	82	75	83	78

Noise rate at Thr_Max [counts/sec] for M3R4-91

Noise rate at Thr_Max [counts/sec] for M3R4-91

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	429168	443553	594774	426568	431029	347227	514161	346492	347504	454296	469360	377106	360003	557292	617801	517181
FEB-2	389998	485042	510722	480374	412954	336603	301235	383174	506707	516961	458626	297079	653652	513124	481096	504818
FEB-3	382441	476812	505484	468029	263003	493703	255372	350111	331511	315699	300071	332214	378276	339045	484474	402587