	<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
9	79	425949	12	77	392823	12	79	419442	11	09-JUL-07

Thr_Max in register units for M3R4-9

Thr_Max in register units for M3R4-9

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	71	84	84	81	77	82	78	88	75	82	76	85	71	79	74	81
FEB-2	81	89	78	81	76	75	78	74	86	70	80	78	70	77	78	68
FEB-3	71	81	77	77	71	72	72	91	84	80	80	79	75	82	82	83

Noise rate at Thr_Max [counts/sec] for M3R4-9

Noise rate at Thr_Max [counts/sec] for M3R4-9

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	487818	575408	586040	408719	351705	377154	335777	333719	302961	310514	339880	338096	404550	410800	617053	634997
FEB-2	382538	539466	298737	340403	267245	494370	288341	325137	395310	325608	424556	356758	351801	449840	511491	533569
FEB-3	297560	955351	325621	646292	204216	417362	297824	389175	271960	333175	234657	314932	454991	438081	482820	647050