figure 1: schmatic diagram note: a to be shown with the time period of setting to stable high voltage from changing control voltage (v cont). b no condensation information furnished by hamamatsu is believed to be reliable. however, no responsibility is assumed for possible inaccuracies or omissions. specifications are subject to change without notice. no patent rights are granted to any of the circuits described herein. ?005 hamamatsu photoni cs k.k. subject to local technical requirements and regulations, availability of products included in this promotional material may var y. please consult with our sales office. general wide frequency bandwidth fast high voltage programming response wide high voltage output range compact and lightweight high voltage power supply socket assembly with wide bandwidth amplifier (dap-type) C7950 series the C7950 series is a dap type socket assembly designed for 28 mm (1-1/8") diameter, head-on and side-on photomultiplier tubes (pmt). the C7950 series socket assembly incorporates a regulated high voltage power supply, an active voltage divider and a current-to-voltage c onversion circuit, along with an amplifier having a wide bandwidth (0 hz to 5 mhz). the C7950 series converts the small-current high-impedance output of the pmt into a low-impedance voltage output with a convers ion factor of 0.3 v/ a. the C7950 series enables simple yet stable pmt operations by supplying 15 v and connecting to control voltage (0 v to +3.6 v) for high voltage adjustments. figure 2: wire connection pmt socket wide bandwidth amplifier active voltage divider high voltage power supply 50 ? signal output (coax) -15 v input (blue) * cannot control hv output by a potentiometer. +15 v input (red) vcont input (white) gnd (shield) orange v ref control (gray) hv adj sig out (black) white shield red +15 v 15 v in (light-blue) -15 v blue shield shield sig out gnd hv control (0 v to +3.6 v) nc -15 v +15 v gnd gnd taccc0125ea taccc0126ea parameter unit applicable photomultiplier tube type of voltage divider input voltage range max. input voltage input current output voltage maximum input signal current (at 13 v output) line regulation against input change hv ripple noise (peak to peak) control voltage / output voltage ratio output voltage control (external controlling voltage) settling time a frequency bandwidth (-3 db) current to voltage conversion factor maximum output voltage (with no load resistor at 5 mhz) output impedance offset voltage output noise voltage (with no load resistor) operating ambient temperature b storage temperature b weight +15 v -15 v vcont: 3.6 v to 1.6 v vcont: 1.6 v to 3.6 v typ. typ. typ. typ. typ. typ. typ. ty p. ty p. active +14 to +16 / -14 to -16 +18 / -18 20 0 to -900 43 0.03 0.03 1: -250 0 to +3.6 300 80 0 hz to 5 mhz 0.3 13 50 10 8 0 to +40 -15 to +60 60 v v ma ma v a % % v ms ms v/ a v p ? mv mv rms c c g 28 mm dia. head-on type (r5929, r6094 etc.) 65 C7950-01 28 mm dia. side-on type 60 C7950 specifications features preliminary data
figure 3: voltage controlling characteristics figure 4: frequency response of built-in amplifier tacc1034e02 nov. 2005 ip figure 5: dimensional outline (unit: mm) tacca0261eb tacca0268ea tacca0267ea hamamatsu photonics k.k., electron tube division 314-5, shimokanzo, iwata city, shizuoka pref., 438-0193, japan, telephone: (81)539/62-5248, fax: (81)539/62-2205 u.s.a.: hamamatsu corporation: 360 foothill road, p. o. box 6910, bridgewater. n.j. 08807-0910, u.s.a., telephone: (1)908-231-0960, fa x: (1)908-231-1218 e-mail: usa@hamamatsu.com germany: hamamatsu photonics deutschland gmbh: arzbergerstr. 10, d-82211 herrsching am ammersee, germany, telephone: (49)8152-375-0, f ax: (49)8152-2658 e-mail: info@hamamatsu.de france: hamamatsu photonics france s.a.r.l.: 8, rue du saule trapu, parc du moulin de massy, 91882 massy cedex, france, telephone: (33 )1 69 53 71 00, fax: (33)1 69 53 71 10 e-mail: infos@hamamatsu.fr united kingdom: hamamatsu photonics uk limited: 2 howard court, 10 tewin road welwyn garden city hertfordshire al7 1bw, united kingdom, teleph one: 44-(0)1707-294888, fax: 44(0)1707-325777 e-mail: info@hamamatsu.co.uk north europe: hamamatsu photonics norden ab: smidesv ? gen 12, se-171-41 solna, sweden, telephone: (46)8-509-031-00, fax: (46)8-509-031-01 e-mail: info@hamamatsu.se italy: hamamatsu photonics italia: s.r.l.: strada della moia, 1/e, 20020 arese, (milano), italy, telephone: (39)02-935 81 733, fax: (39)02-935 81 741 e-mail: info@hamamatsu.it web site www.hamamatsu.com high voltage power supply socket assembly with wide band amplifier C7950 series 0 0 control voltage (v) output voltage (v) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -250 -500 -750 -1000 coax rg-174/u shielded cable (covering twisted pair) shielded cable (covering twisted pair) black gray light blue signal output gnd vcont no connection gnd +15 v -15 v gnd clear shield white orange shield red blue shield C7950 C7950-01 38.0 0.3 5 3.5 33.0 0.3 49.0 0.3 housing (metal) 29.0 0.3 housing (metal) 31.7 0.3 0.7 4 450 10 57.7 0.5 450 10 53.0 0.5 7 25.6 31.7 0.3 0.01 100 0.1 -20 5 -3 db -5 0 -10 -15 frequency (mhz) relative gain (db) 10 110 3 1.5 10.2 54 132 1 2 3 4 5 6 housing magnetic shield case pmt o-rings 4-m2 screws l = 6 C7950-01 [suggested fixture layout for the flange] [how to use the housing with flange] * the flange and o-ring are available to sold separately as p/n; a7719. [including part 1 , 2 , 4 and 5 ] 123 4 54 0.1 43 m42 p = 1.5 (for fixing) 4-m3 flange * * o-ring 26 42 46 60 5 6 accessories (unit: mm) sold separately flange a7709 housing e7718 [suggested fixture layout for the flange] 54 0.1 48 3-m3 120 120 direction of light 1 2 3 4 5 6 7 8 9 !0 [including part 1 , 4 , 5 , 6 , 8 and !0 ] insulator (cushion) pmt e989 magnetic shield case clamping metal parts 2-m3 screws l = 5 flange C7950 o-ring fixture 2-m3 screws l = 5 5 80 2 54 60 35.2 1.0 9 8 !0 6 5 4 3 2 1 7 taccb0067ea taccb0065eb
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