	<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
56	73	532459	13	72	390437	12	82	424010	12	10-JUL-07

Thr_Max in register units for M3R4-56

Thr_Max in register units for M3R4-56

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	79	77	68	78	76	77	67	80	61	79	67	81	72	68	67	78
FEB-2	80	69	76	72	72	69	69	78	70	75	63	77	60	76	77	74
FEB-3	77	83	81	85	81	81	79	83	86	83	83	82	86	82	83	83

Noise rate at Thr_Max [counts/sec] for M3R4-56

Noise rate at Thr_Max [counts/sec] for M3R4-56

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	694772	627899	973759	535438	592973	321413	408695	442921	499184	346732	412484	310484	464514	579623	564348	744097
FEB-2	341121	632922	250763	461547	328775	432784	302172	465058	263714	411757	284013	391767	295217	415891	372943	596541
FEB-3	537154	432857	365118	278630	433746	362730	372639	304904	419170	579080	478733	299794	484124	506159	492745	436576