	<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
31	75	414361	12	76	395137	10	74	448669	12	25-JUN-07

Thr_Max in register units for M3R4-31

Thr_Max in register units for M3R4-31

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	64	81	71	71	72	75	75	80	74	80	75	87	77	80	71
FEB-2	78	73	73	71	78	77	79	71	76	75	81	82	77	76	80	74
FEB-3	79	73	73	69	68	74	85	70	74	70	71	75	73	74	80	74

Noise rate at Thr_Max [counts/sec] for M3R4-31

Noise rate at Thr_Max [counts/sec] for M3R4-31

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	465373	436743	474055	341060	280624	333783	622026	290048	366405	275771	504501	289102	394000	361366	459788	735138
FEB-2	477403	497363	490196	359714	310916	348611	268522	335526	367139	387608	337898	311684	392173	329461	593999	513973
FEB-3	455821	663291	374142	586071	267484	461604	356843	318141	376880	280602	517470	327661	485921	517054	472541	717174