	<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
36	80	438922	12	74	478840	12	77	529015	13	22-JUN-07

Thr_Max in register units for M3R4-36

Thr_Max in register units for M3R4-36

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	76	83	79	83	72	71	83	80	82	77	80	79	91	80	80	84
FEB-2	82	82	76	75	70	74	73	69	69	76	76	79	66	81	66	74
FEB-3	73	80	71	80	72	79	76	72	75	78	79	79	82	85	77	79

Noise rate at Thr_Max [counts/sec] for M3R4-36

Noise rate at Thr_Max [counts/sec] for M3R4-36

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	445222	560482	477857	526167	356139	446837	543943	454679	302305	384861	264726	666042	272591	529351	390472	401072
FEB-2	506421	542663	409105	625580	351654	257682	306389	536110	421483	449570	767470	361207	529481	468316	450280	678026
FEB-3	400449	609318	342616	516217	416703	554680	376420	472637	295703	513922	603764	786245	491264	787348	720902	576059