RUSSELL and SIGURD VARIAN

(1898-1959) (1901-1961)

Electronics laboratories do not usually manufacture blackberry jam. But when the first official visitor arrived at the newly-founded Varian Associates in August 1948 he found the jam pot merrily bubbling on an electric cooker and sterilized jars waiting to be filled. The Varian brothers, Russell and Sigurd, already had a reputation for their invention and development of the klystron and they were known to do things in unusual ways.

The visitor, a government official sent to survey the company's facilities, later said that he would not have been surprised if the jam making had been one of Russell's experiments. The truth was more prosaic. Sigurd's wife, Winnie, did not want to waste a good harvest of blackberries.

About Christmas, the same official received a jar of jam through the post, the last of Varian Associates' first product line. Sorry, he was told, but re-orders could not be accepted though they would be happy to discuss any requirements for klystrons or travelling-wave tubes.

So began the corporate life of Varian Associates, an international company now just over 50 years old and long famous for its klystrons which are used in such diverse applications as television broadcasting, defence, medicine and industrial production. Like the Cavity magnetron, the klystron as a device of high power and high frequency came along at the right time to help the Allied cause in the Second World War.

Childhood

Ever since childhood Russell had made inventions and Sigurd had built them. As adults they went their separate ways but were united by strong family ties; Russell struggled to follow an academic career, Sigurd became a dare-devil pilot. Throughout, however, both dreamed and made inventions with Sigurd never losing faith that one day Russell would invent "the big one" which would put them on the path to riches and independence. Eventually, he did.

Russell Harrison Varian was the eldest son of John Varian and his Australian-born wife, Agnes. It was Agnes who bonded the family together. John and Agnes emigrated to America from Dublin before the turn of the century 1 and settled first in California before moving to Washington DC, where Russell was born on April 24,1898.

From Washington they moved to Syracuse, New York, and Sigurd was born there on May 4, 1901. John suffered from asthma and bronchitis and the family's fortunes went up and down2. After four years on the East Coast John lost his job and for a while it looked as if the children would have to be cared for3 by Agnes's sister. Friends and relatives persuaded them back to California where they settled in Palo Alto in 1902. It was there that their third son, Eric, was born on June 16,1904.

An elderly aunt provided a house, John became a masseur, and life improved. The boys developed a healthy outdoor life-style and the usual indoor one too, as a letter from their mother reveals: "When I got home from San Jose the boys had the house as if a cyclone had gone through it, leaving the dirt from the entire neighbourhood. They had taken it into their heads to make doughnuts and spilt grease all over the floor in great patches, had pillow fights in the parlor and generally played Old Harry." Training the family dog to pull them along on roller skates was another indication of their adventurous spirit.

But their spirit of adventure must have been satiated 4 on the night of April 18, 1906, the night of the San Francisco earthquake. The entire family escaped unscathed; but cycling around to see the damage, and particularly the displacement at the San Andreas fault, made a big impression on Russell.

When the boys were in their teens, life once more became hard. A new law required all masseurs to be registered, but John was self-taught and could not get a licence. His clientele dried up5. In 1914 the family moved to Halcyon, also in California, where they took over the post office and general store -taking with them the family dog, Russell's beehives and two donkeys. Through inheritances, gifts and loans they bought the shop, its stock and, eventually, a house. "They managed", wrote Dorothy Varian, "but the income from the post office and store was barely enough to keep food on the table."

The house took on a cosmopolitan atmosphere as various guests, paying and non-paying, moved in from time to time, some for treatment from John. All were treated with love and some were considered as members of the family. Nan, a lonely Irish girl, was regarded as an adopted niece until her death from tuberculosis - from which Sigurd was later to suffer repeatedly.

Meanwhile the boys made things for amusement, Sigurd stripping old car engines and Russell learning about the audion bulb (the original thermionic triode).

RUSSELL

The Varian boys attended grammar school in Palo Alto and high school near Halcyon. Russell left to work his way through Stanford University to a bachelor's degree in physics, which he received in 1925. Two years later this was followed by a master's degree - a considerable achievement for someone who, as a boy, had been held back by a few years at school because of his appallingly bad reading and spelling, caused possibly by dyslexia. This awful spelling was to stay with him for life. It was sheer persistence and a refined intelligence that saw him through6. Even his career as a student got off to a bad start as surgery and illness wrote off his first year.

Ideally the next step would have been a Ph.D., and a life in academic research, but that was not to be7. Sigurd was ill with tuberculosis and his parents needed financial help from their eldest son. Bell Labs turned him down8 but he got a job, for six months, with Bush Electric in San Francisco. This was followed by a research post with an oil company in Texas. After five months he was dismissed, almost certainly because of personality clashes9 with his employer. It was some compensation, however, that he had been awarded his first patent.

Back in San Francisco he was offered a position with the Farnsworth Television Laboratory. This was 1930, and America's economic structure was in chaos. But television research was progressing in several places and Philo T. Farnsworth's image dissector was acknowledged as one of the leading contenders. Russell Varian was delighted to join, even when a change of financial backer meant a move to Philadelphia. By mid-1933, though, problems between Farnsworth and Philco, the new backer, led to Farnsworth's shutting down. RCA went on to win the race to produce electronic television in America and Russell returned to Stanford. He applied to study for his long-awaited Ph.D. and was astonished when he was turned down.

At 36 years of age, his future had collapsed. He trained as a teacher but never took up the profession. Instead, at the university he did some tutoring here, some marking there, and what research he could. This prompted Sigurd to ask, "Is Russell figuring on making money out of scientific papers, or is he just going to advance the cause of science for nothing?"

SIGURD

Sigurd Fergus Varian left school in 1920 and registered at California Polytechnic but quickly dropped out. He was far too adventurous for the academic life. His contribution was not to be the original researcher but the developer and implementer of ideas, the man who got them to work. With a friend, he set up his own business as an electrician, but then joined the Southern California Edison Company. When stringing high power lines near a small airfield, Sig (as he was known) became fascinated by the aeroplanes. Soon he was receiving flying lessons at $4 each. It was the start of a life-long love affair.

In August 1924 Sigurd bought a wartime biplane. Soon the plane was earning money with stunt flying, advertising, selling lessons and giving joy rides. But by now tuberculosis had struck for the first of several times and six months' rest was needed to clear his lungs. The next year he hired himself out 10 to an electricity company as a flying serviceman and used his plane in other ways to earn a living. By 1926 regulations for flying were being introduced and Sig, and his plane, were duly licensed.

The life he was leading took its toll 11, however, and tuberculosis struck again. This time it was severe and Sigurd spent a year in a sanatorium, a severe trial for one with a driving, adventurous nature. When he finally accepted his fate he used some of his invalid time to plan for the future and study aerial navigation. He also made his first request to Russell to help improve aircraft navigation instruments: a radio compass was their first serious project, though it did not work out.

Sigurd decided it was time to get a regular job with an airline. He was an excellent pilot and was signed up by12 Pan American for its subsidiary in Mexico. The job turned out to be extremely well paid and had more than its fair share of excitement 13, with hunts for emergency landing sites, revolutions and other thrills. He also met and married Winifred Hogg, the daughter of the British consul in Vera Cruz and who, years later, was to make that blackberry jam. Mexico was also where Sigurd learned about the hazards of aircraft navigation and the need for aids, especially for blind landings. The threat of another war in Europe worried him and he pondered how approaching aircraft could be detected. Meanwhile the postmen carried letters to and fro between the brothers as they exchanged ideas for inventions and businesses.

By 1935, Sigurd was ready for a change. He took six months' leave and he and Winnie headed for Halcyon and a home laboratory which he set up and shared with Eric and Russell.

The klystron

During his time at Stanford, Russell built up friendships; and one especially, with a physicist called Bill Hansen, was to blossom. Hansen worked on X-ray phenomena and microwaves. Early in the Second World War his teaching notes were classified and used at the famous MIT Radiation Laboratory, where much of the American work on radar was performed and co-ordinated. Before that, however, with Russell Varian he speculated on how to get high velocity electrons without spending a lot of money. The result of Hansen's work was the rhumbatron (named after the rhumba dance), a cavity resonator which was to feature in the invention of the klystron.

When Russell arrived at the home laboratory, Sigurd and Eric were busy developing earlier ideas and still hoping that Russell would invent "the big one". Cities were being bombed in Spain and China, and aircraft detection was high on Sig's list of priorities14. They knew that short wave radiation would be suitable but there was no way of generating the high powers required. Of course they did not then know of the secret military work on pulsed radar.

Russell recognized the need for a resonator and thought of Bill Hansen's rhumbatron. He and Hansen talked it over in May 1936 and Russell developed his ideas further. In February 1937 he had the design for a microwave tube and sought permission to use Hansen's resonator. Other ideas developed and Russell came to realise that completion of the project was beyond the resources15 of their little laboratory.

Sigurd's drive and determination saved them. He believed this was the "big one". Now he proposed to use the laboratories of Stanford University. Russell hesitated. Sig did not. By the end of April they had an agreement with the university that it would provide facilities, the right to consult with staff, a research grant of $100, but no salaries. In return, Stanford got equal shares of any financial return. It was a good deal all round.

Celebration

Once they had started, many ideas and variations on ideas tumbled out of their minds16. So much so that on June 5, 1937, Russell decided to sit down and classify them all to ensure nothing was overlooked. It was whilst doing his classification that the fundamental idea for the klystron, the velocity grouping or bunching principle, struck him. Sig remembered the date clearly: it was the day be blew the main breaker in the university power house.

With a determined struggle they completed the design and built the first klystron, overcoming many problems on the way. The completion of the first hand-filed hexagonal grids called for a celebration. Building their own detection and measuring equipment proved to be another important problem; and solved it was. In two months the Model A 10cm klystron, encased in a vacuum bell jar, was working - intermittently - on August 19, 1937. By the 30th the device had been rebuilt and gave continuous operation at 13cm. It had cost $50 of Stanford's money.

Up to then the device had been known as the "thing" and the "can". A respectable name was needed. "Tron" was a common suffix for a vacuum tube and "klyso" was chosen as representing the bunching of waves on a beach, hence klystron.

Further detailed development work was needed. Instead of just three men (Russell, Sigurd and Bill Hansen) a whole team was now involved and a lot more effort and money was needed. Sperry Gyroscope agreed to fund the work with up to $25 000 a year. Suddenly it was big business.

The relationship with Sperry, industrial production and war-time use of klystrons are stories in themselves. The brothers were not cut out to accept direction of their ideas and their work from others17 and the relationship with their new employer involved several conflicts. Facilities were moved from California to the East Coast. Russell was engrossed in the vital patent applications and Sigurd's approach to his work brought more tuberculosis and wrote him off 18 for almost another year. At one stage, it was rumoured that Sperry wanted to buy the patents and sack the pair of them. It is not surprising that the brothers and their friends laid plans for their own post-war research laboratory.

In mid-1946 Russell returned to Palo Alto, depressed by the failure of his five-year-old marriage. But things were about to improve. He took great joy from hiking and camping and in 1946 he married a fellow camper, Dorothy. This marriage lasted until his death in the great outdoors of Alaska on July 28,1959.

The time had come for the long-discussed laboratory to become a reality. Russell found a suitable building measuring 30 by 40 feet on an unpaved street in San Carlos. It was cheap. On April 20, 1948, Varian Associates became a legal reality. Sigurd arrived in May full of energy and enthusiasm. A sum of about $45 000 was needed of which the partners could contribute only $23 000. A new recruit added $5000 but that still left them $17 000 short. Their distrust for big business ruled out going to financiers and it was Bill Hansen who once again stepped in to help19. Hansen was then a sick man and would not live another year, but he provided the remaining money, possibly by mortgaging his house. Varian Associates was established.

Honours came their way, including medals from the Franklin Institute and an honorary doctorate for Russell, who had been denied the chance to work for one. Sigurd continued to be plagued by poor health and in later years he spent more and more time in semi-retirement at his home in Mexico, building a workshop and inventing.

On 18 October, 1961, he was flying parts for his workshop back to his Mexican home. It was dark and the airport lights were out. He decided to land on the beach, crashed and was killed. It was probably the way the great adventurer would have wanted to go 20.

Task I

Speak about Varian family and childhood of Russell and Sigurd.

Task II

Tell the history of klystron invention.

Task III

Tell about Russell’s life and research..

Task IV

Tell about Sigurd Varian.

WALTER BRATTAIN

(1902 –1987)

Date: 2015-12-24; view: 1022