	<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
26	80	601090	14	79	414366	11	78	519494	13	12-JUN-07

Thr_Max in register units for M3R4-26

Thr_Max in register units for M3R4-26

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	82	80	83	80	85	72	82	76	83	71	85	81	84	73	85	77
FEB-2	70	88	71	86	68	81	66	84	81	81	74	80	86	81	81	86
FEB-3	83	76	73	79	80	72	83	78	80	73	86	78	75	79	78	81

Noise rate at Thr_Max [counts/sec] for M3R4-26

Noise rate at Thr_Max [counts/sec] for M3R4-26

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	577497	690615	518724	581664	447440	673959	400526	577910	479587	427249	1019391	624763	478289	593640	621498	904684
FEB-2	418610	516932	524177	389958	303753	336946	308647	356738	479646	287549	368285	343046	349768	659092	419295	567411
FEB-3	775349	576598	508524	501981	602390	484942	430934	320823	361614	369778	495899	497898	531359	578919	643273	631618