9-cell Nb cavity seminar Dec.01, 2009 Facilities for 9-cell Nb cavities.

9-cell Nb cavity seminar9-cell Nb cavity seminar Dec.01, 2009Dec.01, 2009

Facilities for Facilities for 9-cell Nb 9-cell Nb cavities cavities


(1) A standard ultrasonic cleaner “SONO SW30H”(1) A standard ultrasonic cleaner “SONO SW30H”

The cleaner with inside container dimension of 505L*300W*200H is The cleaner with inside container dimension of 505L*300W*200H is bought, its vibrator frequency is 38kHz, ultrasonic power is 300W, it is used bought, its vibrator frequency is 38kHz, ultrasonic power is 300W, it is used to wash half cell, dumbbell , stiffen ring, beam tube and so on in clean room.to wash half cell, dumbbell , stiffen ring, beam tube and so on in clean room.

9-cell Nb cavity seminar9-cell Nb cavity seminar Dec.01, 2009Dec.01, 2009（（ 22 ）） Frequency measuring device for half cell and Frequency measuring device for half cell and dumbbelldumbbell

11 、、 Half cell 1/2pi mode Half cell 1/2pi mode calculationcalculation

22 、、 Dumbbell pi mode Dumbbell pi mode calculationcalculation

By calculation, the relation of the frequency depend on the length of iris By calculation, the relation of the frequency depend on the length of iris and equator linear section can be obtained. so during edge cutting, we can and equator linear section can be obtained. so during edge cutting, we can determine how many length of iris and equator will be cut for each half cell determine how many length of iris and equator will be cut for each half cell and dumbbell. This require a frequency measuring device should be of and dumbbell. This require a frequency measuring device should be of several kHz frequency stability and good measurement repeatability.several kHz frequency stability and good measurement repeatability.


finger contact with finger contact with soft rubber sealing soft rubber sealing supportsupport

11 、、 Half cell 1/2pi mode Half cell 1/2pi mode measurementmeasurement

22 、、 Dumbbell 1/2pi and pi mode Dumbbell 1/2pi and pi mode measurementmeasurement

A special frequency measuring device with finger contact is A special frequency measuring device with finger contact is designed to measure the frequency. The mode’s Q value can reach designed to measure the frequency. The mode’s Q value can reach more than 3000, the stability of frequency is low than 1kHz.more than 3000, the stability of frequency is low than 1kHz.

（（ 22 ）） frequency measuring device for half cell and frequency measuring device for half cell and dumbbell (con’t)dumbbell (con’t)


（（ 33 ）） Vacuum container with Teflon clamper for Vacuum container with Teflon clamper for dumbbell and end cell transportations and CBPdumbbell and end cell transportations and CBP


（（ 44 ）） HPR deviceHPR device A HPR device had been designed, now it’s just under parts fabrication. A A HPR device had been designed, now it’s just under parts fabrication. A THK type guide with 1510mm effective moving range is chosen, and a THK type guide with 1510mm effective moving range is chosen, and a oriental motor with center hole of 20mm is adopted. The 9-cell cavity is oriental motor with center hole of 20mm is adopted. The 9-cell cavity is hanged on top plate support, nozzle pipe move up and down with the speed hanged on top plate support, nozzle pipe move up and down with the speed of 0.5 to 5 minute per turn along the guide, also the nozzle rotate with the of 0.5 to 5 minute per turn along the guide, also the nozzle rotate with the speed of 0.4 to 20 rpm. Since this device is not only used for 9-cell 1.3GHz speed of 0.4 to 20 rpm. Since this device is not only used for 9-cell 1.3GHz cavity, also it can serve for BEPCII 500 MHz cavity.cavity, also it can serve for BEPCII 500 MHz cavity.


（（ 44 ）） HPR device (con’t)HPR device (con’t) Two special design for nozzle and guide water-proof structure.Two special design for nozzle and guide water-proof structure.


（（ 55 ）） Ultrasonic cleanerUltrasonic cleaner A custom-designed ultrasonic rinsing tank A custom-designed ultrasonic rinsing tank will be fabricated to satisfy the rinsing will be fabricated to satisfy the rinsing requirements of the 9-cell 1.3 GHz and 500MHz requirements of the 9-cell 1.3 GHz and 500MHz cavity. During washing period, the cavity can cavity. During washing period, the cavity can move along the guide which is same as HPR move along the guide which is same as HPR used one.used one. In order to choose the ultrasonic machine In order to choose the ultrasonic machine parameter, I send a email to Hayano-san to parameter, I send a email to Hayano-san to inquire the design parameter of STF one. Refer inquire the design parameter of STF one. Refer STF design, we choose the tank inside size is STF design, we choose the tank inside size is 650mm*850mm*1500mm(height), but four 650mm*850mm*1500mm(height), but four vibrator put in both side of tank, the effective vibrator put in both side of tank, the effective space is reduced to about space is reduced to about 650mm*650mm*1500mm, the heater power is 650mm*650mm*1500mm, the heater power is 6kW, that means it need 6 hour to warm up 6kW, that means it need 6 hour to warm up whole tank water 20 degree higher. The whole tank water 20 degree higher. The vibration power is 8 kW, each vibrator is 2 kW. vibration power is 8 kW, each vibrator is 2 kW. Oscillation frequency choose 40 kHz.Oscillation frequency choose 40 kHz.


（（ 55 ）） Ultrasonic rinsing device (con’t)Ultrasonic rinsing device (con’t)Sender ： Hitoshi HayanoSend Time ： 2009-08-22 11:13:37Title ： Re: Inquire the parameters of Ultrasonic Rinsing Device

Dear Li Zhongquan,The answer of your question regarding ultra-sonic rinse system of STF, is as follows;The design and production company: Nomura plating co.Used component for ultra-sonic: ScanRex(r), Sansha-Denki : http://www.sansha.co.jp/product: Clean Rex S-4060E (total 8 units in the tank, 4 unit in X plane and 4 units in Y plane)the detail of the specification is not in my hand (maybe somewhere in STF, I could not find so far)maybe, 40kHz, 600W is put into 300 x 300 x 100 (roughly) ultrasonic vibrator. normal operation is in max power for 8 units.Water tank : 1000 x 1000 x 2000(depth) with 5kW heater and water circulating pump. normal operating temperature is 50 degree.Cavity is put into this water tank in the center with independent UPW overflow inside of cavity. All the time cavity is hung in the tank by outside crane.Nominal operation time duration is around 1 hour.By our recent study, sulfur on the cavity surface can be removed by ethanol filled in and ultra-sonic, or by detergent filled in and ultra-sonic. So you need to think about to use these fluid for ultrasonic rinsing.

I write on 2009.08.16Dear Prof. Hayano,I'm Zhongquan Li from IHEP CHINA, Last time you visit our institute, I inquire some information about ultrasonic rinsing equipment for your 9-cell Nb cavity. Now I'm responsible for design of our ultrasonic rinsing device, we want to refer your design, can you tell me some parameter, such as frequency, power, heater power, and vessel dimensions.


（（ 66 ）） Vertical pretuning deviceVertical pretuning device

after taking 6 time pretuning, after taking 6 time pretuning, the field flatness had reached the field flatness had reached 97.8%.97.8%.


（（ 66 ）） Vertical pretuning device (con’t)Vertical pretuning device (con’t)

11 、、 A Labview program control the step A Labview program control the step motor and network analyzer to start up motor and network analyzer to start up synchronously, also it download and synchronously, also it download and record the phase data from network record the phase data from network analyzer after phase sweeping.analyzer after phase sweeping.

22 、、 A Java program calculate the A Java program calculate the frequency error of each cell respect frequency error of each cell respect to target setting frequency, also it to target setting frequency, also it calculate the flatness for this turn calculate the flatness for this turn measurement.measurement.

9-cell Nb cavity seminar Dec.01, 2009 Facilities for 9-cell Nb cavities.

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