	<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
60	74	540309	12	73	352187	11	73	405291	12	03-JUL-07

Thr_Max in register units for M3R4-60

Thr_Max in register units for M3R4-60

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	77	66	79	71	76	74	75	75	73	71	80	78	69	78	66
FEB-2	73	81	70	71	81	74	75	73	75	69	73	68	75	66	78	70
FEB-3	72	68	73	70	82	71	77	67	74	71	79	75	76	72	73	68

Noise rate at Thr_Max [counts/sec] for M3R4-60

Noise rate at Thr_Max [counts/sec] for M3R4-60

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	493872	564509	368233	489388	506925	456184	477863	424565	634435	417545	559118	714059	709797	510287	646138	672032
FEB-2	431619	390387	489679	216815	446835	205349	566637	132302	477581	146259	374766	117353	610228	200150	597076	231959
FEB-3	327111	519707	376857	489923	253011	381134	376285	315557	375653	302385	456614	414199	505071	330748	526565	533828